TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Đorđević, Dragan M.
AU  - Stanković, Maja N.
AU  - Paunović, Vesna
AU  - Krstić, Nenad S.
AU  - Manojlović, Jelena
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3564
AB  - The Global Energy Crisis necessitated improving research into new, renewable and alternative energy sources. Due to that, our focus is on the area of some phenomena and applications where different synthetic methods and microstructure property optimization achieved significant improvement in the electro physical properties of output materials and components. This is especially important for higher energy efficiency and electricity production (batteries and battery systems, fuel cells, and hydrogen energy). The improvement of energy storage tank capacity is one of the most important development issues in the energy sphere too. It is because of this very promising research and application area that we are expanding the knowledge on these phenomena through fractal nature analysis. So, the results obtained in the field of electrochemical energy sources, especially in electrolyte development, are taken into account the analysis of fractal nature optimization. Based on the research field of fractal material science, particularly electronic materials, we conducted research in micro-structure fractal influence in the area of electrochemistry. We investigated the consolidation parameters of Fe2O3 redox processes. The influence of activation energy, fundamental thermodynamic parameters, and also the fractal correction of electrode surface area through complex fractal dimension with recognized grains and pores, and the Brownian motion of particles is introduced. Finally, the electrochemical Butler-Volmer equation fractalization is obtained. These results practically open new frontiers in electrochemical energy processes performed through the Arrhenius equation within electrolyte bulk and electrode relations and more complete and precise energy generation.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Butler-volmer current equation and fractal nature correction in electrochemical energy
EP  - 1848
IS  - 3
SP  - 1837
VL  - 25
DO  - 10.2298/TSCI200117232M
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Đorđević, Dragan M. and Stanković, Maja N. and Paunović, Vesna and Krstić, Nenad S. and Manojlović, Jelena",
year = "2021",
abstract = "The Global Energy Crisis necessitated improving research into new, renewable and alternative energy sources. Due to that, our focus is on the area of some phenomena and applications where different synthetic methods and microstructure property optimization achieved significant improvement in the electro physical properties of output materials and components. This is especially important for higher energy efficiency and electricity production (batteries and battery systems, fuel cells, and hydrogen energy). The improvement of energy storage tank capacity is one of the most important development issues in the energy sphere too. It is because of this very promising research and application area that we are expanding the knowledge on these phenomena through fractal nature analysis. So, the results obtained in the field of electrochemical energy sources, especially in electrolyte development, are taken into account the analysis of fractal nature optimization. Based on the research field of fractal material science, particularly electronic materials, we conducted research in micro-structure fractal influence in the area of electrochemistry. We investigated the consolidation parameters of Fe2O3 redox processes. The influence of activation energy, fundamental thermodynamic parameters, and also the fractal correction of electrode surface area through complex fractal dimension with recognized grains and pores, and the Brownian motion of particles is introduced. Finally, the electrochemical Butler-Volmer equation fractalization is obtained. These results practically open new frontiers in electrochemical energy processes performed through the Arrhenius equation within electrolyte bulk and electrode relations and more complete and precise energy generation.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Butler-volmer current equation and fractal nature correction in electrochemical energy",
pages = "1848-1837",
number = "3",
volume = "25",
doi = "10.2298/TSCI200117232M"
}

Mitić, V. V., Lazović, G., Đorđević, D. M., Stanković, M. N., Paunović, V., Krstić, N. S.,& Manojlović, J.. (2021). Butler-volmer current equation and fractal nature correction in electrochemical energy. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 25(3), 1837-1848.
https://doi.org/10.2298/TSCI200117232M

Mitić VV, Lazović G, Đorđević DM, Stanković MN, Paunović V, Krstić NS, Manojlović J. Butler-volmer current equation and fractal nature correction in electrochemical energy. in Thermal Science. 2021;25(3):1837-1848.
doi:10.2298/TSCI200117232M .

Mitić, Vojislav V., Lazović, Goran, Đorđević, Dragan M., Stanković, Maja N., Paunović, Vesna, Krstić, Nenad S., Manojlović, Jelena, "Butler-volmer current equation and fractal nature correction in electrochemical energy" in Thermal Science, 25, no. 3 (2021):1837-1848,
https://doi.org/10.2298/TSCI200117232M . .

TY  - JOUR
AU  - Veljković, Sandra
AU  - Mitić, Vojislav V.
AU  - Paunović, Vesna
AU  - Lazović, Goran
AU  - Mohr, Markus
AU  - Fecht, Hans
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3456
AB  - There is a progressing interests for polycrystalline diamonds and they have been more extensively used recently. This area has been intensively researched due to the outstanding potential of this material, and this necessitated presenting some of the latest application related to engineering in this paper. A better insight of polycrystalline diamonds properties can be achieved by intensively researching the surface structure. Samples of nanocrystalline diamonds grown by the chemical vapor deposition method are analyzed and accordingly, the focus of the research was the surface parameters and their structure. It is observed that waviness and texture are unique for any direction, their values are almost the same for the chosen directions and they vary approximately from -0.2 nm to 0.4 nm. Analyses of the parameters allowed a more detailed insight into the morphology of the surfaces of polycrystalline films.
PB  - Univerzitet u Kragujevcu - Fakultet tehničkih nauka, Čačak
T2  - Serbian Journal of Electrical Engineering
T1  - Analyses of the surface parameters in polycrystalline diamonds
EP  - 129
IS  - 1
SP  - 111
VL  - 17
DO  - 10.2298/SJEE2001111V
ER  - 

@article{
author = "Veljković, Sandra and Mitić, Vojislav V. and Paunović, Vesna and Lazović, Goran and Mohr, Markus and Fecht, Hans",
year = "2020",
abstract = "There is a progressing interests for polycrystalline diamonds and they have been more extensively used recently. This area has been intensively researched due to the outstanding potential of this material, and this necessitated presenting some of the latest application related to engineering in this paper. A better insight of polycrystalline diamonds properties can be achieved by intensively researching the surface structure. Samples of nanocrystalline diamonds grown by the chemical vapor deposition method are analyzed and accordingly, the focus of the research was the surface parameters and their structure. It is observed that waviness and texture are unique for any direction, their values are almost the same for the chosen directions and they vary approximately from -0.2 nm to 0.4 nm. Analyses of the parameters allowed a more detailed insight into the morphology of the surfaces of polycrystalline films.",
publisher = "Univerzitet u Kragujevcu - Fakultet tehničkih nauka, Čačak",
journal = "Serbian Journal of Electrical Engineering",
title = "Analyses of the surface parameters in polycrystalline diamonds",
pages = "129-111",
number = "1",
volume = "17",
doi = "10.2298/SJEE2001111V"
}

Veljković, S., Mitić, V. V., Paunović, V., Lazović, G., Mohr, M.,& Fecht, H.. (2020). Analyses of the surface parameters in polycrystalline diamonds. in Serbian Journal of Electrical Engineering
Univerzitet u Kragujevcu - Fakultet tehničkih nauka, Čačak., 17(1), 111-129.
https://doi.org/10.2298/SJEE2001111V

Veljković S, Mitić VV, Paunović V, Lazović G, Mohr M, Fecht H. Analyses of the surface parameters in polycrystalline diamonds. in Serbian Journal of Electrical Engineering. 2020;17(1):111-129.
doi:10.2298/SJEE2001111V .

Veljković, Sandra, Mitić, Vojislav V., Paunović, Vesna, Lazović, Goran, Mohr, Markus, Fecht, Hans, "Analyses of the surface parameters in polycrystalline diamonds" in Serbian Journal of Electrical Engineering, 17, no. 1 (2020):111-129,
https://doi.org/10.2298/SJEE2001111V . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Lu, Chun-An
AU  - Paunović, Vesna
AU  - Radović, Ivana
AU  - Stajcić, Aleksandar
AU  - Vlahović, Branislav
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3425
AB  - Featured Application The nano BaTiO3 modification could lead towards innovation in nanocoating of ceramic grains in function of submicron intergranular capacitors. The electronic parameters integration in the frame of microelectronics in intergranular phenomena by fractals is opening novel route in miniaturization and integrations. Fractal analysis and calculations provide necessary fractal corrections for sample synthesis. Abstract The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 degrees C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (alpha (s)) and pore size (alpha (p)) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors.
PB  - MDPI, Basel
T2  - Applied Sciences - Basel
T1  - The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
IS  - 10
VL  - 10
DO  - 10.3390/app10103485
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Lu, Chun-An and Paunović, Vesna and Radović, Ivana and Stajcić, Aleksandar and Vlahović, Branislav",
year = "2020",
abstract = "Featured Application The nano BaTiO3 modification could lead towards innovation in nanocoating of ceramic grains in function of submicron intergranular capacitors. The electronic parameters integration in the frame of microelectronics in intergranular phenomena by fractals is opening novel route in miniaturization and integrations. Fractal analysis and calculations provide necessary fractal corrections for sample synthesis. Abstract The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 degrees C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (alpha (s)) and pore size (alpha (p)) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors.",
publisher = "MDPI, Basel",
journal = "Applied Sciences - Basel",
title = "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers",
number = "10",
volume = "10",
doi = "10.3390/app10103485"
}

Mitić, V. V., Lazović, G., Lu, C., Paunović, V., Radović, I., Stajcić, A.,& Vlahović, B.. (2020). The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences - Basel
MDPI, Basel., 10(10).
https://doi.org/10.3390/app10103485

Mitić VV, Lazović G, Lu C, Paunović V, Radović I, Stajcić A, Vlahović B. The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers. in Applied Sciences - Basel. 2020;10(10).
doi:10.3390/app10103485 .

Mitić, Vojislav V., Lazović, Goran, Lu, Chun-An, Paunović, Vesna, Radović, Ivana, Stajcić, Aleksandar, Vlahović, Branislav, "The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers" in Applied Sciences - Basel, 10, no. 10 (2020),
https://doi.org/10.3390/app10103485 . .

TY  - JOUR
AU  - Popović, Ana L.
AU  - Rusmirović, Jelena D.
AU  - Veličković, Zlate
AU  - Radovanović, Željko
AU  - Ristić, Mirjana
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4067
AB  - Novel highly effective amino-functionalized lignin-based biosorbent in the microsphere geometry (A-LMS) for removal of heavy metal ions, was synthesized via inverse suspension copolymerization of kraft lignin with poly(ethylene imine) grafting-agent and epoxy chloropropane cross-linker. Optimization of A-LMS synthesis, performed with respect to the quantity of sodium alginate emulsifier (1, 5 and 10 wt%), provides highly porous microspheres A-LMS_5, using 5 wt% emulsifier, with 800 ± 80 μm diameter, 7.68 m(2) g(-1) surface area and 7.7 mmol g(-1) of terminal amino groups. Structural and surface characteristics were obtained from Brunauer-Emmett-Teller method, Fourier Transform-Infrared spectroscopy, scanning electron microscopy, X-ray photo-electron spectroscopy and porosity determination. In a batch test, the influence of pH, A-LMS_5 dose, temperature, contact time on adsorption efficiency of Ni2+, Cd2+, As(V) and Cr(VI) ions were studied. The adsorption is spontaneous and feasible with maximum adsorption capacity of 74.84, 54.20, 53.12 and 49.42 mg g(-1) for Cd2+, Cr(VI), As(V) and Ni2+ ions, respectively, obtained by using Langmuir model. Modeling of kinetic data indicated fast adsorbate removal rate with pore diffusional transport as rate limiting step (pseudo-second order model and Weber-Morris equations), thus further confirming high performances of produced bio-adsorbent for heavy metal ions removal.
PB  - Elsevier
T2  - International Journal of Biological Macromolecules
T1  - Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal
EP  - 1173
SP  - 1160
VL  - 156
DO  - 10.1016/j.ijbiomac.2019.11.152
ER  - 

@article{
author = "Popović, Ana L. and Rusmirović, Jelena D. and Veličković, Zlate and Radovanović, Željko and Ristić, Mirjana and Pavlović, Vera P. and Marinković, Aleksandar D.",
year = "2020",
abstract = "Novel highly effective amino-functionalized lignin-based biosorbent in the microsphere geometry (A-LMS) for removal of heavy metal ions, was synthesized via inverse suspension copolymerization of kraft lignin with poly(ethylene imine) grafting-agent and epoxy chloropropane cross-linker. Optimization of A-LMS synthesis, performed with respect to the quantity of sodium alginate emulsifier (1, 5 and 10 wt%), provides highly porous microspheres A-LMS_5, using 5 wt% emulsifier, with 800 ± 80 μm diameter, 7.68 m(2) g(-1) surface area and 7.7 mmol g(-1) of terminal amino groups. Structural and surface characteristics were obtained from Brunauer-Emmett-Teller method, Fourier Transform-Infrared spectroscopy, scanning electron microscopy, X-ray photo-electron spectroscopy and porosity determination. In a batch test, the influence of pH, A-LMS_5 dose, temperature, contact time on adsorption efficiency of Ni2+, Cd2+, As(V) and Cr(VI) ions were studied. The adsorption is spontaneous and feasible with maximum adsorption capacity of 74.84, 54.20, 53.12 and 49.42 mg g(-1) for Cd2+, Cr(VI), As(V) and Ni2+ ions, respectively, obtained by using Langmuir model. Modeling of kinetic data indicated fast adsorbate removal rate with pore diffusional transport as rate limiting step (pseudo-second order model and Weber-Morris equations), thus further confirming high performances of produced bio-adsorbent for heavy metal ions removal.",
publisher = "Elsevier",
journal = "International Journal of Biological Macromolecules",
title = "Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal",
pages = "1173-1160",
volume = "156",
doi = "10.1016/j.ijbiomac.2019.11.152"
}

Popović, A. L., Rusmirović, J. D., Veličković, Z., Radovanović, Ž., Ristić, M., Pavlović, V. P.,& Marinković, A. D.. (2020). Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal. in International Journal of Biological Macromolecules
Elsevier., 156, 1160-1173.
https://doi.org/10.1016/j.ijbiomac.2019.11.152

Popović AL, Rusmirović JD, Veličković Z, Radovanović Ž, Ristić M, Pavlović VP, Marinković AD. Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal. in International Journal of Biological Macromolecules. 2020;156:1160-1173.
doi:10.1016/j.ijbiomac.2019.11.152 .

Popović, Ana L., Rusmirović, Jelena D., Veličković, Zlate, Radovanović, Željko, Ristić, Mirjana, Pavlović, Vera P., Marinković, Aleksandar D., "Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal" in International Journal of Biological Macromolecules, 156 (2020):1160-1173,
https://doi.org/10.1016/j.ijbiomac.2019.11.152 . .

TY  - JOUR
AU  - Popović, Ana L.
AU  - Rusmirović, Jelena D.
AU  - Veličković, Zlate
AU  - Radovanović, Željko
AU  - Ristić, Mirjana
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3419
AB  - Novel highly effective amino-functionalized lignin-based biosorbent in the microsphere geometry (A-LMS) for removal of heavy metal ions, was synthesized via inverse suspension copolymerization of kraft lignin with poly(ethylene imine) grafting-agent and epoxy chloropropane cross-linker. Optimization of A-LMS synthesis, performed with respect to the quantity of sodium alginate emulsifier (1, 5 and 10 wt%), provides highly porous microspheres A-LMS_5, using 5 wt% emulsifier, with 800 ± 80 μm diameter, 7.68 m(2) g(-1) surface area and 7.7 mmol g(-1) of terminal amino groups. Structural and surface characteristics were obtained from Brunauer-Emmett-Teller method, Fourier Transform-Infrared spectroscopy, scanning electron microscopy, X-ray photo-electron spectroscopy and porosity determination. In a batch test, the influence of pH, A-LMS_5 dose, temperature, contact time on adsorption efficiency of Ni2+, Cd2+, As(V) and Cr(VI) ions were studied. The adsorption is spontaneous and feasible with maximum adsorption capacity of 74.84, 54.20, 53.12 and 49.42 mg g(-1) for Cd2+, Cr(VI), As(V) and Ni2+ ions, respectively, obtained by using Langmuir model. Modeling of kinetic data indicated fast adsorbate removal rate with pore diffusional transport as rate limiting step (pseudo-second order model and Weber-Morris equations), thus further confirming high performances of produced bio-adsorbent for heavy metal ions removal.
PB  - Elsevier, Amsterdam
T2  - International Journal of Biological Macromolecules
T1  - Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal
EP  - 1173
SP  - 1160
VL  - 156
DO  - 10.1016/j.ijbiomac.2019.11.152
ER  - 

@article{
author = "Popović, Ana L. and Rusmirović, Jelena D. and Veličković, Zlate and Radovanović, Željko and Ristić, Mirjana and Pavlović, Vera P. and Marinković, Aleksandar D.",
year = "2020",
abstract = "Novel highly effective amino-functionalized lignin-based biosorbent in the microsphere geometry (A-LMS) for removal of heavy metal ions, was synthesized via inverse suspension copolymerization of kraft lignin with poly(ethylene imine) grafting-agent and epoxy chloropropane cross-linker. Optimization of A-LMS synthesis, performed with respect to the quantity of sodium alginate emulsifier (1, 5 and 10 wt%), provides highly porous microspheres A-LMS_5, using 5 wt% emulsifier, with 800 ± 80 μm diameter, 7.68 m(2) g(-1) surface area and 7.7 mmol g(-1) of terminal amino groups. Structural and surface characteristics were obtained from Brunauer-Emmett-Teller method, Fourier Transform-Infrared spectroscopy, scanning electron microscopy, X-ray photo-electron spectroscopy and porosity determination. In a batch test, the influence of pH, A-LMS_5 dose, temperature, contact time on adsorption efficiency of Ni2+, Cd2+, As(V) and Cr(VI) ions were studied. The adsorption is spontaneous and feasible with maximum adsorption capacity of 74.84, 54.20, 53.12 and 49.42 mg g(-1) for Cd2+, Cr(VI), As(V) and Ni2+ ions, respectively, obtained by using Langmuir model. Modeling of kinetic data indicated fast adsorbate removal rate with pore diffusional transport as rate limiting step (pseudo-second order model and Weber-Morris equations), thus further confirming high performances of produced bio-adsorbent for heavy metal ions removal.",
publisher = "Elsevier, Amsterdam",
journal = "International Journal of Biological Macromolecules",
title = "Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal",
pages = "1173-1160",
volume = "156",
doi = "10.1016/j.ijbiomac.2019.11.152"
}

Popović, A. L., Rusmirović, J. D., Veličković, Z., Radovanović, Ž., Ristić, M., Pavlović, V. P.,& Marinković, A. D.. (2020). Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal. in International Journal of Biological Macromolecules
Elsevier, Amsterdam., 156, 1160-1173.
https://doi.org/10.1016/j.ijbiomac.2019.11.152

Popović AL, Rusmirović JD, Veličković Z, Radovanović Ž, Ristić M, Pavlović VP, Marinković AD. Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal. in International Journal of Biological Macromolecules. 2020;156:1160-1173.
doi:10.1016/j.ijbiomac.2019.11.152 .

Popović, Ana L., Rusmirović, Jelena D., Veličković, Zlate, Radovanović, Željko, Ristić, Mirjana, Pavlović, Vera P., Marinković, Aleksandar D., "Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal" in International Journal of Biological Macromolecules, 156 (2020):1160-1173,
https://doi.org/10.1016/j.ijbiomac.2019.11.152 . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, Nina
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Balać, Igor
AU  - Đorđević, Antonije
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3009
AB  - Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (alpha-, kappa-, gamma-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 degrees C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method over-comes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for epsilon'(r) and 0.003 for tan delta. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.
PB  - Elsevier, Amsterdam
T2  - Advanced Powder Technology
T1  - The effect of ball milling on properties of sintered manganese-doped alumina
EP  - 2540
IS  - 11
SP  - 2533
VL  - 30
DO  - 10.1016/j.apt.2019.07.033
ER  - 

@article{
author = "Filipović, Suzana and Obradović, Nina and Marković, Smilja and Mitrić, Miodrag and Balać, Igor and Đorđević, Antonije and Pavlović, Vladimir B.",
year = "2019",
abstract = "Alumina-based compounds have many technological applications and attract great attention even after decades of investigation, due to their good chemical, electrical, and mechanical properties. A mixture of several alumina modifications (alpha-, kappa-, gamma-Al2O3) doped with 1 wt% of Mn2O3 was used for this experiment. The powder was mechanically activated for 60 min in an ethanol medium. After compaction, green bodies were sintered in the temperature range from 1200 to 1400 degrees C. Microstructures of the obtained specimens were investigated by scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS). The influence of morphological changes on electrical and mechanical properties was examined in detail. We have developed a test fixture and corresponding software for measurement of the relative dielectric permittivity and the loss tangent of ceramic specimens. This new method over-comes the problems of dimensions and shape of samples, as well as the problem of applying silver paste. The accuracy is around 2% for epsilon'(r) and 0.003 for tan delta. We demonstrate that the mechanical activation (MA) has the dominant influence on lowering the characteristic temperatures and microstructure development, which further leads to increased permittivity and tensile strength.",
publisher = "Elsevier, Amsterdam",
journal = "Advanced Powder Technology",
title = "The effect of ball milling on properties of sintered manganese-doped alumina",
pages = "2540-2533",
number = "11",
volume = "30",
doi = "10.1016/j.apt.2019.07.033"
}

Filipović, S., Obradović, N., Marković, S., Mitrić, M., Balać, I., Đorđević, A.,& Pavlović, V. B.. (2019). The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology
Elsevier, Amsterdam., 30(11), 2533-2540.
https://doi.org/10.1016/j.apt.2019.07.033

Filipović S, Obradović N, Marković S, Mitrić M, Balać I, Đorđević A, Pavlović VB. The effect of ball milling on properties of sintered manganese-doped alumina. in Advanced Powder Technology. 2019;30(11):2533-2540.
doi:10.1016/j.apt.2019.07.033 .

Filipović, Suzana, Obradović, Nina, Marković, Smilja, Mitrić, Miodrag, Balać, Igor, Đorđević, Antonije, Pavlović, Vladimir B., "The effect of ball milling on properties of sintered manganese-doped alumina" in Advanced Powder Technology, 30, no. 11 (2019):2533-2540,
https://doi.org/10.1016/j.apt.2019.07.033 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Paunović, Vesna
AU  - Cvetković, Nenad
AU  - Jovanović, Dejan
AU  - Veljković, Sandra
AU  - Randjelović, Branislav M.
AU  - Vlahović, Branislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3944
AB  - The world's perennial need for energy and microelectronic miniaturization brings with it a broad set of technological and scientific challenges. Materials characterized by precise microstructural architectures based on fractal analysis and ranging in size down to nano scale represent an important avenue for finding novel solutions. Deep materials structure hierarchies of this type open new possibilities in capacity according to the Heywang model, especially when extended by a fractals approach and intergranular relationships supported and recognized by their fractal nature. These developments are opening new frontiers in microelectronics miniaturization. They build on early fractal applications that were used as tools in miniaturization research and also provided application perspectives for diverse energy technologies. In other words, fractals, as a crucial concept of modem theoretical-experimental physics and materials sciences, are tightly linked to higher integration processes and microelectronics miniaturization. They also hold potential for meeting the energy exploitation challenge. In this research context, for the first time we experimentally and theoretically investigated the electrostatic field between the grains within fractal nature aspects. It is essentially a theoretical experiment based on samples of experimental microstructures imaged with SEM, as previously published in a number of other papers. We now take the research a step further by consolidating the experimental samples with respect to the predicted distribution of grains and pores within the sample mass. We make an original contribution by opening the frame of scale sizes with respect to the technical processes of consolidation. This lets us predict the constitutive elements of the microstructures - approximately equidistant grains and pores. In this paper we define in a practical manner the final target elements for experimental consolidation of real samples. It is the main bridge between a designed microstructure and related characteristics - for example, fractal dimensions and final properties of next-generation fractal microelectronics.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Fractal frontiers in microelectronic ceramic materials
EP  - 9685
IS  - 7
SP  - 9679
VL  - 45
DO  - 10.1016/j.ceramint.2019.01.020
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Paunović, Vesna and Cvetković, Nenad and Jovanović, Dejan and Veljković, Sandra and Randjelović, Branislav M. and Vlahović, Branislav",
year = "2019",
abstract = "The world's perennial need for energy and microelectronic miniaturization brings with it a broad set of technological and scientific challenges. Materials characterized by precise microstructural architectures based on fractal analysis and ranging in size down to nano scale represent an important avenue for finding novel solutions. Deep materials structure hierarchies of this type open new possibilities in capacity according to the Heywang model, especially when extended by a fractals approach and intergranular relationships supported and recognized by their fractal nature. These developments are opening new frontiers in microelectronics miniaturization. They build on early fractal applications that were used as tools in miniaturization research and also provided application perspectives for diverse energy technologies. In other words, fractals, as a crucial concept of modem theoretical-experimental physics and materials sciences, are tightly linked to higher integration processes and microelectronics miniaturization. They also hold potential for meeting the energy exploitation challenge. In this research context, for the first time we experimentally and theoretically investigated the electrostatic field between the grains within fractal nature aspects. It is essentially a theoretical experiment based on samples of experimental microstructures imaged with SEM, as previously published in a number of other papers. We now take the research a step further by consolidating the experimental samples with respect to the predicted distribution of grains and pores within the sample mass. We make an original contribution by opening the frame of scale sizes with respect to the technical processes of consolidation. This lets us predict the constitutive elements of the microstructures - approximately equidistant grains and pores. In this paper we define in a practical manner the final target elements for experimental consolidation of real samples. It is the main bridge between a designed microstructure and related characteristics - for example, fractal dimensions and final properties of next-generation fractal microelectronics.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Fractal frontiers in microelectronic ceramic materials",
pages = "9685-9679",
number = "7",
volume = "45",
doi = "10.1016/j.ceramint.2019.01.020"
}

Mitić, V. V., Lazović, G., Paunović, V., Cvetković, N., Jovanović, D., Veljković, S., Randjelović, B. M.,& Vlahović, B.. (2019). Fractal frontiers in microelectronic ceramic materials. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(7), 9679-9685.
https://doi.org/10.1016/j.ceramint.2019.01.020

Mitić VV, Lazović G, Paunović V, Cvetković N, Jovanović D, Veljković S, Randjelović BM, Vlahović B. Fractal frontiers in microelectronic ceramic materials. in Ceramics International. 2019;45(7):9679-9685.
doi:10.1016/j.ceramint.2019.01.020 .

Mitić, Vojislav V., Lazović, Goran, Paunović, Vesna, Cvetković, Nenad, Jovanović, Dejan, Veljković, Sandra, Randjelović, Branislav M., Vlahović, Branislav, "Fractal frontiers in microelectronic ceramic materials" in Ceramics International, 45, no. 7 (2019):9679-9685,
https://doi.org/10.1016/j.ceramint.2019.01.020 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Paunović, Vesna
AU  - Veljković, Sandra
AU  - Randjelović, Branislav M.
AU  - Vlahović, Branislav
AU  - Fecht, Hans
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3136
AB  - Consolidation parameters have influence and can be used to control structure of BaTiO3 based materials. Microstructure and dielectric properties of Yb2O3 doped BaTiO3-ceramics, sintered from 1320 degrees C to 1380 degrees C have been investigated. The correlation between microstructure, capacity and dielectric properties of doped BaTiO3-ceramics, based on fractal geometry and micro-contact surfaces, has been developed. Using the fractal descriptors of the grains contact surface, the microstructure reconstruction constituents, as grains and pores shapes or intergranular contacts, has been successfully done. Obtained results indicated that fractal analysis contact surfaces descriptors of different shapes are very important for the prognosis of BaTiO3-ceramics microstructure and capacity and dielectric properties. The morphology of ceramics grains pointed out the validity of developing new structure analytical methods, based on different grains' shape geometries. The grains contact structure based on Minkowski hull is presented as a new tool for BaTiO3-ceramics materials structure research. The materials properties prognosis are determined according to the correlations synthesis-structure-property, within Minkowski hull fractal frame.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Ferroelectrics
T1  - Electronic ceramics fractal microstructure analysis-Minkowski Hull and grain boundaries
EP  - 194
IS  - 1
SP  - 184
VL  - 545
DO  - 10.1080/00150193.2019.1621704
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Paunović, Vesna and Veljković, Sandra and Randjelović, Branislav M. and Vlahović, Branislav and Fecht, Hans",
year = "2019",
abstract = "Consolidation parameters have influence and can be used to control structure of BaTiO3 based materials. Microstructure and dielectric properties of Yb2O3 doped BaTiO3-ceramics, sintered from 1320 degrees C to 1380 degrees C have been investigated. The correlation between microstructure, capacity and dielectric properties of doped BaTiO3-ceramics, based on fractal geometry and micro-contact surfaces, has been developed. Using the fractal descriptors of the grains contact surface, the microstructure reconstruction constituents, as grains and pores shapes or intergranular contacts, has been successfully done. Obtained results indicated that fractal analysis contact surfaces descriptors of different shapes are very important for the prognosis of BaTiO3-ceramics microstructure and capacity and dielectric properties. The morphology of ceramics grains pointed out the validity of developing new structure analytical methods, based on different grains' shape geometries. The grains contact structure based on Minkowski hull is presented as a new tool for BaTiO3-ceramics materials structure research. The materials properties prognosis are determined according to the correlations synthesis-structure-property, within Minkowski hull fractal frame.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Ferroelectrics",
title = "Electronic ceramics fractal microstructure analysis-Minkowski Hull and grain boundaries",
pages = "194-184",
number = "1",
volume = "545",
doi = "10.1080/00150193.2019.1621704"
}

Mitić, V. V., Lazović, G., Paunović, V., Veljković, S., Randjelović, B. M., Vlahović, B.,& Fecht, H.. (2019). Electronic ceramics fractal microstructure analysis-Minkowski Hull and grain boundaries. in Ferroelectrics
Taylor & Francis Ltd, Abingdon., 545(1), 184-194.
https://doi.org/10.1080/00150193.2019.1621704

Mitić VV, Lazović G, Paunović V, Veljković S, Randjelović BM, Vlahović B, Fecht H. Electronic ceramics fractal microstructure analysis-Minkowski Hull and grain boundaries. in Ferroelectrics. 2019;545(1):184-194.
doi:10.1080/00150193.2019.1621704 .

Mitić, Vojislav V., Lazović, Goran, Paunović, Vesna, Veljković, Sandra, Randjelović, Branislav M., Vlahović, Branislav, Fecht, Hans, "Electronic ceramics fractal microstructure analysis-Minkowski Hull and grain boundaries" in Ferroelectrics, 545, no. 1 (2019):184-194,
https://doi.org/10.1080/00150193.2019.1621704 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Paunović, Vesna
AU  - Cvetković, Nenad
AU  - Jovanović, Dejan
AU  - Veljković, Sandra
AU  - Randjelović, Branislav M.
AU  - Vlahović, Branislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3123
AB  - The world's perennial need for energy and microelectronic miniaturization brings with it a broad set of technological and scientific challenges. Materials characterized by precise microstructural architectures based on fractal analysis and ranging in size down to nano scale represent an important avenue for finding novel solutions. Deep materials structure hierarchies of this type open new possibilities in capacity according to the Heywang model, especially when extended by a fractals approach and intergranular relationships supported and recognized by their fractal nature. These developments are opening new frontiers in microelectronics miniaturization. They build on early fractal applications that were used as tools in miniaturization research and also provided application perspectives for diverse energy technologies. In other words, fractals, as a crucial concept of modem theoretical-experimental physics and materials sciences, are tightly linked to higher integration processes and microelectronics miniaturization. They also hold potential for meeting the energy exploitation challenge. In this research context, for the first time we experimentally and theoretically investigated the electrostatic field between the grains within fractal nature aspects. It is essentially a theoretical experiment based on samples of experimental microstructures imaged with SEM, as previously published in a number of other papers. We now take the research a step further by consolidating the experimental samples with respect to the predicted distribution of grains and pores within the sample mass. We make an original contribution by opening the frame of scale sizes with respect to the technical processes of consolidation. This lets us predict the constitutive elements of the microstructures - approximately equidistant grains and pores. In this paper we define in a practical manner the final target elements for experimental consolidation of real samples. It is the main bridge between a designed microstructure and related characteristics - for example, fractal dimensions and final properties of next-generation fractal microelectronics.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Fractal frontiers in microelectronic ceramic materials
EP  - 9685
IS  - 7
SP  - 9679
VL  - 45
DO  - 10.1016/j.ceramint.2019.01.020
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Paunović, Vesna and Cvetković, Nenad and Jovanović, Dejan and Veljković, Sandra and Randjelović, Branislav M. and Vlahović, Branislav",
year = "2019",
abstract = "The world's perennial need for energy and microelectronic miniaturization brings with it a broad set of technological and scientific challenges. Materials characterized by precise microstructural architectures based on fractal analysis and ranging in size down to nano scale represent an important avenue for finding novel solutions. Deep materials structure hierarchies of this type open new possibilities in capacity according to the Heywang model, especially when extended by a fractals approach and intergranular relationships supported and recognized by their fractal nature. These developments are opening new frontiers in microelectronics miniaturization. They build on early fractal applications that were used as tools in miniaturization research and also provided application perspectives for diverse energy technologies. In other words, fractals, as a crucial concept of modem theoretical-experimental physics and materials sciences, are tightly linked to higher integration processes and microelectronics miniaturization. They also hold potential for meeting the energy exploitation challenge. In this research context, for the first time we experimentally and theoretically investigated the electrostatic field between the grains within fractal nature aspects. It is essentially a theoretical experiment based on samples of experimental microstructures imaged with SEM, as previously published in a number of other papers. We now take the research a step further by consolidating the experimental samples with respect to the predicted distribution of grains and pores within the sample mass. We make an original contribution by opening the frame of scale sizes with respect to the technical processes of consolidation. This lets us predict the constitutive elements of the microstructures - approximately equidistant grains and pores. In this paper we define in a practical manner the final target elements for experimental consolidation of real samples. It is the main bridge between a designed microstructure and related characteristics - for example, fractal dimensions and final properties of next-generation fractal microelectronics.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Fractal frontiers in microelectronic ceramic materials",
pages = "9685-9679",
number = "7",
volume = "45",
doi = "10.1016/j.ceramint.2019.01.020"
}

Mitić, V. V., Lazović, G., Paunović, V., Cvetković, N., Jovanović, D., Veljković, S., Randjelović, B. M.,& Vlahović, B.. (2019). Fractal frontiers in microelectronic ceramic materials. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(7), 9679-9685.
https://doi.org/10.1016/j.ceramint.2019.01.020

Mitić VV, Lazović G, Paunović V, Cvetković N, Jovanović D, Veljković S, Randjelović BM, Vlahović B. Fractal frontiers in microelectronic ceramic materials. in Ceramics International. 2019;45(7):9679-9685.
doi:10.1016/j.ceramint.2019.01.020 .

Mitić, Vojislav V., Lazović, Goran, Paunović, Vesna, Cvetković, Nenad, Jovanović, Dejan, Veljković, Sandra, Randjelović, Branislav M., Vlahović, Branislav, "Fractal frontiers in microelectronic ceramic materials" in Ceramics International, 45, no. 7 (2019):9679-9685,
https://doi.org/10.1016/j.ceramint.2019.01.020 . .

TY  - JOUR
AU  - Mitić, Vojislav V.
AU  - Lazović, Goran
AU  - Paunović, Vesna
AU  - Hwu, Jih Ru
AU  - Tsay, Shwu-Chen
AU  - Perng, Tsong-Ping
AU  - Veljković, Sandra
AU  - Vlahović, Branislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3023
AB  - The new frontiers open different directions within the higher and deeper knowledge structure using unemployed nano sizes domains. The BaTiO3 and other ceramic materials have fractal configuration nature based on three phenomena. First, ceramic grains have fractal shape looking as a contour in cross section or as a surface. Second, there is the so-called "negative space" made of pores and intergranular space. Third, there is fractal Brownian motion (fBm) within the material, during and after sintering, in the form of microparticle flow: ions, atoms, and electrons. Here, we took upon ourselves the task of extending Coble's model, with already generalized Euclidean geometries, by fractal nature correction. These triple factors make the very peculiar microelectronic environment electro-static/dynamic combination. The stress is here set on inter-granular micro-capacity in function of higher energy harvesting and storage. Constructive fractal theory allows identifying micro-capacitors with fractal electrodes. The method is based on the iterative process of interpolation which is compatible with the grain model itself. Inter-granular permeability is taken as the fundamental thermodynamic parameter function of temperature and enthalpy (Gibbs free energy), which are very important for a structure-energy relation.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of The European Ceramic Society
T1  - Ceramic materials and energy-Extended Coble's model and fractal nature
EP  - 3525
IS  - 12
SP  - 3513
VL  - 39
DO  - 10.1016/j.jeurceramsoc.2019.04.009
ER  - 

@article{
author = "Mitić, Vojislav V. and Lazović, Goran and Paunović, Vesna and Hwu, Jih Ru and Tsay, Shwu-Chen and Perng, Tsong-Ping and Veljković, Sandra and Vlahović, Branislav",
year = "2019",
abstract = "The new frontiers open different directions within the higher and deeper knowledge structure using unemployed nano sizes domains. The BaTiO3 and other ceramic materials have fractal configuration nature based on three phenomena. First, ceramic grains have fractal shape looking as a contour in cross section or as a surface. Second, there is the so-called "negative space" made of pores and intergranular space. Third, there is fractal Brownian motion (fBm) within the material, during and after sintering, in the form of microparticle flow: ions, atoms, and electrons. Here, we took upon ourselves the task of extending Coble's model, with already generalized Euclidean geometries, by fractal nature correction. These triple factors make the very peculiar microelectronic environment electro-static/dynamic combination. The stress is here set on inter-granular micro-capacity in function of higher energy harvesting and storage. Constructive fractal theory allows identifying micro-capacitors with fractal electrodes. The method is based on the iterative process of interpolation which is compatible with the grain model itself. Inter-granular permeability is taken as the fundamental thermodynamic parameter function of temperature and enthalpy (Gibbs free energy), which are very important for a structure-energy relation.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of The European Ceramic Society",
title = "Ceramic materials and energy-Extended Coble's model and fractal nature",
pages = "3525-3513",
number = "12",
volume = "39",
doi = "10.1016/j.jeurceramsoc.2019.04.009"
}

Mitić, V. V., Lazović, G., Paunović, V., Hwu, J. R., Tsay, S., Perng, T., Veljković, S.,& Vlahović, B.. (2019). Ceramic materials and energy-Extended Coble's model and fractal nature. in Journal of The European Ceramic Society
Elsevier Sci Ltd, Oxford., 39(12), 3513-3525.
https://doi.org/10.1016/j.jeurceramsoc.2019.04.009

Mitić VV, Lazović G, Paunović V, Hwu JR, Tsay S, Perng T, Veljković S, Vlahović B. Ceramic materials and energy-Extended Coble's model and fractal nature. in Journal of The European Ceramic Society. 2019;39(12):3513-3525.
doi:10.1016/j.jeurceramsoc.2019.04.009 .

Mitić, Vojislav V., Lazović, Goran, Paunović, Vesna, Hwu, Jih Ru, Tsay, Shwu-Chen, Perng, Tsong-Ping, Veljković, Sandra, Vlahović, Branislav, "Ceramic materials and energy-Extended Coble's model and fractal nature" in Journal of The European Ceramic Society, 39, no. 12 (2019):3513-3525,
https://doi.org/10.1016/j.jeurceramsoc.2019.04.009 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Andjelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakocević, Zlatko
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4043
AB  - Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3 NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.
PB  - Elsevier
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
EP  - 10020
IS  - 8
SP  - 10013
VL  - 45
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Andjelika and Đokić, Veljko and Popović, Maja and Rakocević, Zlatko and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3 NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10020-10013",
number = "8",
volume = "45",
doi = "10.1016/j.ceramint.2019.02.045"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakocević, Z., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakocević Z, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković Đ. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Andjelika, Đokić, Veljko, Popović, Maja, Rakocević, Zlatko, Horvath, Endre, Kollar, Marton, Nafradi, Balint, Schiller, Andreas, Domanski, Konrad, Forro, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Andjelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3103
AB  - Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3 NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
EP  - 10020
IS  - 8
SP  - 10013
VL  - 45
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Andjelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 ± 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3 NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10020-10013",
number = "8",
volume = "45",
doi = "10.1016/j.ceramint.2019.02.045"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević Z, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković Đ. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Andjelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horvath, Endre, Kollar, Marton, Nafradi, Balint, Schiller, Andreas, Domanski, Konrad, Forro, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 . .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6798
AB  - Nanocrystalline cobalt magnesium ferrites with varying cobalt and magnesium content (CoxMg1-xFe2O4, 0<x<1) were synthesized using the sol-gel self-combustion method with citric acid as fuel, followed by calcination at 700 °C for 2 hours. Structural characterization was performed using Xray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy. It confirmed the formation of agglomerated nanocrystalline ferrites with an inverse cubic spinel structure. The optical band gap energy was determined using UV/Vis spectrophotometry. It reduced with increased Co content. Visible light photocatalytic activity was tested using natural and artificial light sources through a series of experimental degradations of the methylene blue (MB) solution.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, Programme and The Book of Abstracts
T1  - Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis
EP  - 126
SP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6798
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Pavlović, Vera P. and Vujančević, Jelena and Tadić, Nenad and Nikolić, Maria Vesna",
year = "2019",
abstract = "Nanocrystalline cobalt magnesium ferrites with varying cobalt and magnesium content (CoxMg1-xFe2O4, 0<x<1) were synthesized using the sol-gel self-combustion method with citric acid as fuel, followed by calcination at 700 °C for 2 hours. Structural characterization was performed using Xray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy. It confirmed the formation of agglomerated nanocrystalline ferrites with an inverse cubic spinel structure. The optical band gap energy was determined using UV/Vis spectrophotometry. It reduced with increased Co content. Visible light photocatalytic activity was tested using natural and artificial light sources through a series of experimental degradations of the methylene blue (MB) solution.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, Programme and The Book of Abstracts",
title = "Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis",
pages = "126-126",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6798"
}

Vasiljević, Z. Ž., Dojčinović, M., Pavlović, V. P., Vujančević, J., Tadić, N.,& Nikolić, M. V.. (2019). Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis. in Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, Programme and The Book of Abstracts
Belgrade : Materials Research Society of Serbia., 126-126.
https://hdl.handle.net/21.15107/rcub_machinery_6798

Vasiljević ZŽ, Dojčinović M, Pavlović VP, Vujančević J, Tadić N, Nikolić MV. Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis. in Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, Programme and The Book of Abstracts. 2019;:126-126.
https://hdl.handle.net/21.15107/rcub_machinery_6798 .

Vasiljević, Zorka Ž., Dojčinović, Milena, Pavlović, Vera P., Vujančević, Jelena, Tadić, Nenad, Nikolić, Maria Vesna, "Structure, morphology and photocatalytic properties of CoxMg1-xFe2O4 (0<x<1) spinel ferrites obtained by sol-gel synthesis" in Twenty-first Annual Conference YUCOMAT 2019 & Eleventh World Round Table Conference on Sintering WRTCS 2019, Herceg Novi, Montenegro, September 2-6, 2019, Programme and The Book of Abstracts (2019):126-126,
https://hdl.handle.net/21.15107/rcub_machinery_6798 .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Dojčinović, Milena
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Marković, Smilja
AU  - Tadić, Nenad
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6797
AB  - In this work, spinel magnesium cobalt ferrites (CoxMg1-xFe2O4, x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9) were synthesized by a sol-gel combustion method. Magnesium nitrate, cobalt nitrate and iron nitrate were used as oxidizers and citric acid was used as a reducing agent. The effects of cobalt ions on structural and morphological properties were investigated and characterized by X-ray diffraction (XRD), Raman spectroscopy, Field emission scanning electron microscope (FESEM) and Fourier transform infrared (FT-IR) spectroscopy. A cubic spinel structure formed with a varied distribution of cobalt and magnesium ions on tetrahedral and octahedral sites that depended on their content. All ferrite powders consisted of multigrain agglomerates. Optical properties were investigated by UV- vis spectrophotometry. The photocatalytic activity of as prepared samples was evaluated by measuring the rate of photodegradation reaction of methylene blue (MB) under visible light irradiation. After 240 min, compared to other samples, the sample labeled as Co0.1Mg0.9Fe2O4 showed the best rate of photodecomposition of MB resulting in reduction of 90% of its initial concentration.
PB  - Institute for Multidisciplinary Research, University of Belgrade
C3  - 5th Conference of The Serbian Society for Ceramic Materials - 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia, Programme and the Book of Abstracts
T1  - Influence of Co2+ ions on photocatalytic properties of MgFe2O4 ferrites
EP  - 73
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6797
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Dojčinović, Milena and Pavlović, Vera P. and Vujančević, Jelena and Marković, Smilja and Tadić, Nenad and Nikolić, Maria Vesna",
year = "2019",
abstract = "In this work, spinel magnesium cobalt ferrites (CoxMg1-xFe2O4, x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9) were synthesized by a sol-gel combustion method. Magnesium nitrate, cobalt nitrate and iron nitrate were used as oxidizers and citric acid was used as a reducing agent. The effects of cobalt ions on structural and morphological properties were investigated and characterized by X-ray diffraction (XRD), Raman spectroscopy, Field emission scanning electron microscope (FESEM) and Fourier transform infrared (FT-IR) spectroscopy. A cubic spinel structure formed with a varied distribution of cobalt and magnesium ions on tetrahedral and octahedral sites that depended on their content. All ferrite powders consisted of multigrain agglomerates. Optical properties were investigated by UV- vis spectrophotometry. The photocatalytic activity of as prepared samples was evaluated by measuring the rate of photodegradation reaction of methylene blue (MB) under visible light irradiation. After 240 min, compared to other samples, the sample labeled as Co0.1Mg0.9Fe2O4 showed the best rate of photodecomposition of MB resulting in reduction of 90% of its initial concentration.",
publisher = "Institute for Multidisciplinary Research, University of Belgrade",
journal = "5th Conference of The Serbian Society for Ceramic Materials - 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia, Programme and the Book of Abstracts",
title = "Influence of Co2+ ions on photocatalytic properties of MgFe2O4 ferrites",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6797"
}

Vasiljević, Z. Ž., Dojčinović, M., Pavlović, V. P., Vujančević, J., Marković, S., Tadić, N.,& Nikolić, M. V.. (2019). Influence of Co2+ ions on photocatalytic properties of MgFe2O4 ferrites. in 5th Conference of The Serbian Society for Ceramic Materials - 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia, Programme and the Book of Abstracts
Institute for Multidisciplinary Research, University of Belgrade., 73-73.
https://hdl.handle.net/21.15107/rcub_machinery_6797

Vasiljević ZŽ, Dojčinović M, Pavlović VP, Vujančević J, Marković S, Tadić N, Nikolić MV. Influence of Co2+ ions on photocatalytic properties of MgFe2O4 ferrites. in 5th Conference of The Serbian Society for Ceramic Materials - 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia, Programme and the Book of Abstracts. 2019;:73-73.
https://hdl.handle.net/21.15107/rcub_machinery_6797 .

Vasiljević, Zorka Ž., Dojčinović, Milena, Pavlović, Vera P., Vujančević, Jelena, Marković, Smilja, Tadić, Nenad, Nikolić, Maria Vesna, "Influence of Co2+ ions on photocatalytic properties of MgFe2O4 ferrites" in 5th Conference of The Serbian Society for Ceramic Materials - 5CSCS-2019, June 11-13, 2019, Belgrade, Serbia, Programme and the Book of Abstracts (2019):73-73,
https://hdl.handle.net/21.15107/rcub_machinery_6797 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Pavlović, Vera P.
AU  - Krstić, Jugoslav B.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4066
AB  - Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and Raman spectroscopy confirmed the formation of nanocrystalline zinc‐ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy (SEM) and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30‐90% in the frequency range 42 Hz – 1 MHz at room temperature (25 °C) and 50 °C. At 42 Hz at both analyzed temperatures the impedance reduced ~ 46 times in the humidity range 30‐90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.
PB  - Wiley
T2  - International Journal of Applied Ceramic Technology
T1  - Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing
EP  - 993
IS  - 3
SP  - 981
VL  - 16
DO  - 10.1111/ijac.13190
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Luković, Miloljub D. and Pavlović, Vera P. and Krstić, Jugoslav B. and Vujančević, Jelena and Tadić, Nenad and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and Raman spectroscopy confirmed the formation of nanocrystalline zinc‐ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy (SEM) and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30‐90% in the frequency range 42 Hz – 1 MHz at room temperature (25 °C) and 50 °C. At 42 Hz at both analyzed temperatures the impedance reduced ~ 46 times in the humidity range 30‐90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.",
publisher = "Wiley",
journal = "International Journal of Applied Ceramic Technology",
title = "Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing",
pages = "993-981",
number = "3",
volume = "16",
doi = "10.1111/ijac.13190"
}

Nikolić, M. V., Vasiljević, Z. Ž., Luković, M. D., Pavlović, V. P., Krstić, J. B., Vujančević, J., Tadić, N., Vlahović, B.,& Pavlović, V. B.. (2019). Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology
Wiley., 16(3), 981-993.
https://doi.org/10.1111/ijac.13190

Nikolić MV, Vasiljević ZŽ, Luković MD, Pavlović VP, Krstić JB, Vujančević J, Tadić N, Vlahović B, Pavlović VB. Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology. 2019;16(3):981-993.
doi:10.1111/ijac.13190 .

Nikolić, Maria Vesna, Vasiljević, Zorka Ž., Luković, Miloljub D., Pavlović, Vera P., Krstić, Jugoslav B., Vujančević, Jelena, Tadić, Nenad, Vlahović, Branislav, Pavlović, Vladimir B., "Investigation of ZnFe2O4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing" in International Journal of Applied Ceramic Technology, 16, no. 3 (2019):981-993,
https://doi.org/10.1111/ijac.13190 . .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Mašković, Pavle
AU  - Ćirković, Jovana
AU  - Papan, Jelena M.
AU  - Kosanović, Darko
AU  - Dramićanin, Miroslav
AU  - Petrović, Predrag B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3941
AB  - Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.
PB  - Wiley, Hoboken
T2  - Journal of the American Ceramic Society
T1  - Structure and enhanced antimicrobial activity of mechanically activated nano TiO2
EP  - 7745
IS  - 12
SP  - 7735
VL  - 102
DO  - 10.1111/jace.16668
ER  - 

@article{
author = "Pavlović, Vera P. and Vujančević, Jelena and Mašković, Pavle and Ćirković, Jovana and Papan, Jelena M. and Kosanović, Darko and Dramićanin, Miroslav and Petrović, Predrag B. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Ceramic Society",
title = "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2",
pages = "7745-7735",
number = "12",
volume = "102",
doi = "10.1111/jace.16668"
}

Pavlović, V. P., Vujančević, J., Mašković, P., Ćirković, J., Papan, J. M., Kosanović, D., Dramićanin, M., Petrović, P. B., Vlahović, B.,& Pavlović, V. B.. (2019). Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society
Wiley, Hoboken., 102(12), 7735-7745.
https://doi.org/10.1111/jace.16668

Pavlović VP, Vujančević J, Mašković P, Ćirković J, Papan JM, Kosanović D, Dramićanin M, Petrović PB, Vlahović B, Pavlović VB. Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society. 2019;102(12):7735-7745.
doi:10.1111/jace.16668 .

Pavlović, Vera P., Vujančević, Jelena, Mašković, Pavle, Ćirković, Jovana, Papan, Jelena M., Kosanović, Darko, Dramićanin, Miroslav, Petrović, Predrag B., Vlahović, Branislav, Pavlović, Vladimir B., "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2" in Journal of the American Ceramic Society, 102, no. 12 (2019):7735-7745,
https://doi.org/10.1111/jace.16668 . .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Mašković, Pavle
AU  - Ćirković, Jovana
AU  - Papan, Jelena M.
AU  - Kosanović, Darko
AU  - Dramićanin, Miroslav
AU  - Petrović, Predrag B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3139
AB  - Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.
PB  - Wiley, Hoboken
T2  - Journal of the American Ceramic Society
T1  - Structure and enhanced antimicrobial activity of mechanically activated nano TiO2
EP  - 7745
IS  - 12
SP  - 7735
VL  - 102
DO  - 10.1111/jace.16668
ER  - 

@article{
author = "Pavlović, Vera P. and Vujančević, Jelena and Mašković, Pavle and Ćirković, Jovana and Papan, Jelena M. and Kosanović, Darko and Dramićanin, Miroslav and Petrović, Predrag B. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Titanium dioxide is a photocatalyst, known not only for its ability to oxidize organic contaminants, but also for its antimicrobial properties. In this article, significant enhancement of the antimicrobial activity of TiO2 (up to 32 times) was demonstrated after its activation by ball milling. The antimicrobial activity was analyzed for one fungal and 13 bacterial ATCC strains using the microdilution method and recording the minimum inhibitory concentration (MIC) values. In order to further investigate the correlation between the mechanical activation of TiO2 and its antimicrobial activity, the structure, morphology and phase composition of the material were studied by means of Electron Microscopy, X-ray diffraction and nitrogen adsorption-desorption measurements. UV-Vis diffuse reflectance spectra were recorded and the Kubelka-Munk function was applied to convert reflectance into the equivalent band gap energy (Eg) and, consequently, to investigate changes in the Eg value. X-ray photoelectron spectroscopy was used to analyze the influence of mechanical activation on the Ti 2p and O 1s spectra. The presented results are expected to enable the development of more sustainable and effective advanced TiO2-based materials with antimicrobial properties that could be used in numerous green technology applications.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Ceramic Society",
title = "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2",
pages = "7745-7735",
number = "12",
volume = "102",
doi = "10.1111/jace.16668"
}

Pavlović, V. P., Vujančević, J., Mašković, P., Ćirković, J., Papan, J. M., Kosanović, D., Dramićanin, M., Petrović, P. B., Vlahović, B.,& Pavlović, V. B.. (2019). Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society
Wiley, Hoboken., 102(12), 7735-7745.
https://doi.org/10.1111/jace.16668

Pavlović VP, Vujančević J, Mašković P, Ćirković J, Papan JM, Kosanović D, Dramićanin M, Petrović PB, Vlahović B, Pavlović VB. Structure and enhanced antimicrobial activity of mechanically activated nano TiO2. in Journal of the American Ceramic Society. 2019;102(12):7735-7745.
doi:10.1111/jace.16668 .

Pavlović, Vera P., Vujančević, Jelena, Mašković, Pavle, Ćirković, Jovana, Papan, Jelena M., Kosanović, Darko, Dramićanin, Miroslav, Petrović, Predrag B., Vlahović, Branislav, Pavlović, Vladimir B., "Structure and enhanced antimicrobial activity of mechanically activated nano TiO2" in Journal of the American Ceramic Society, 102, no. 12 (2019):7735-7745,
https://doi.org/10.1111/jace.16668 . .

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Obradović, Nina
AU  - Perendija, Jovana
AU  - Umićević, Ana
AU  - Kapidžić, Ana
AU  - Vlahović, Branislav
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4041
AB  - Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Science and Pollution Research
T1  - Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal
EP  - 12398
IS  - 12
SP  - 12379
VL  - 26
DO  - 10.1007/s11356-019-04625-0
ER  - 

@article{
author = "Rusmirović, Jelena D. and Obradović, Nina and Perendija, Jovana and Umićević, Ana and Kapidžić, Ana and Vlahović, Branislav and Pavlović, Vera P. and Marinković, Aleksandar D. and Pavlović, Vladimir B.",
year = "2019",
abstract = "Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Science and Pollution Research",
title = "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal",
pages = "12398-12379",
number = "12",
volume = "26",
doi = "10.1007/s11356-019-04625-0"
}

Rusmirović, J. D., Obradović, N., Perendija, J., Umićević, A., Kapidžić, A., Vlahović, B., Pavlović, V. P., Marinković, A. D.,& Pavlović, V. B.. (2019). Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research
Springer Heidelberg, Heidelberg., 26(12), 12379-12398.
https://doi.org/10.1007/s11356-019-04625-0

Rusmirović JD, Obradović N, Perendija J, Umićević A, Kapidžić A, Vlahović B, Pavlović VP, Marinković AD, Pavlović VB. Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research. 2019;26(12):12379-12398.
doi:10.1007/s11356-019-04625-0 .

Rusmirović, Jelena D., Obradović, Nina, Perendija, Jovana, Umićević, Ana, Kapidžić, Ana, Vlahović, Branislav, Pavlović, Vera P., Marinković, Aleksandar D., Pavlović, Vladimir B., "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal" in Environmental Science and Pollution Research, 26, no. 12 (2019):12379-12398,
https://doi.org/10.1007/s11356-019-04625-0 . .

TY  - JOUR
AU  - Rusmirović, Jelena D.
AU  - Obradović, Nina
AU  - Perendija, Jovana
AU  - Umićević, Ana
AU  - Kapidžić, Ana
AU  - Vlahović, Branislav
AU  - Pavlović, Vera P.
AU  - Marinković, Aleksandar D.
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3084
AB  - Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.
PB  - Springer Heidelberg, Heidelberg
T2  - Environmental Science and Pollution Research
T1  - Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal
EP  - 12398
IS  - 12
SP  - 12379
VL  - 26
DO  - 10.1007/s11356-019-04625-0
ER  - 

@article{
author = "Rusmirović, Jelena D. and Obradović, Nina and Perendija, Jovana and Umićević, Ana and Kapidžić, Ana and Vlahović, Branislav and Pavlović, Vera P. and Marinković, Aleksandar D. and Pavlović, Vladimir B.",
year = "2019",
abstract = "Iron oxide, in the form of magnetite (MG)–functionalized porous wollastonite (WL), was used as an adsorbent for heavy metal ions (cadmium and nickel) and oxyanions (chromate and phosphate) removal from water. The porous WL was synthesized from calcium carbonate and siloxane by controlled sintering process using low molecular weight submicrosized poly(methyl methacrylate) as a pore-forming agent. The precipitation of MG nanoparticles was carried out directly by a polyol-medium solvothermal method or via branched amino/carboxylic acid cross-linker by solvent/nonsolvent method producing WL/MG and WL-γ-APS/MG adsorbents, respectively. The structure/properties of MG functionalized WL was confirmed by applying FTIR, Raman, XRD, Mössbauer, and SEM analysis. Higher adsorption capacities of 73.126, 66.144, 64.168, and 63.456 mg g−1 for WL-γ-APS/MG in relation to WL/MG of 55.450, 52.019, 48.132, and 47.382 mg g−1 for Cd2+, Ni2+, phosphate, and chromate, respectively, were obtained using nonlinear Langmuir model fitting. Adsorption phenomena were analyzed using monolayer statistical physics model for single adsorption with one energy. Kinetic study showed exceptionally higher pseudo-second-order rate constants for WL-γ-APS/MG, e.g., 1.17–13.4 times, with respect to WL/MG indicating importance of both WL surface modification and controllable precipitation of MG on WL-γ-APS.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Environmental Science and Pollution Research",
title = "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal",
pages = "12398-12379",
number = "12",
volume = "26",
doi = "10.1007/s11356-019-04625-0"
}

Rusmirović, J. D., Obradović, N., Perendija, J., Umićević, A., Kapidžić, A., Vlahović, B., Pavlović, V. P., Marinković, A. D.,& Pavlović, V. B.. (2019). Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research
Springer Heidelberg, Heidelberg., 26(12), 12379-12398.
https://doi.org/10.1007/s11356-019-04625-0

Rusmirović JD, Obradović N, Perendija J, Umićević A, Kapidžić A, Vlahović B, Pavlović VP, Marinković AD, Pavlović VB. Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal. in Environmental Science and Pollution Research. 2019;26(12):12379-12398.
doi:10.1007/s11356-019-04625-0 .

Rusmirović, Jelena D., Obradović, Nina, Perendija, Jovana, Umićević, Ana, Kapidžić, Ana, Vlahović, Branislav, Pavlović, Vera P., Marinković, Aleksandar D., Pavlović, Vladimir B., "Controllable synthesis of Fe3O4-wollastonite adsorbents for efficient heavy metal ions/oxyanions removal" in Environmental Science and Pollution Research, 26, no. 12 (2019):12379-12398,
https://doi.org/10.1007/s11356-019-04625-0 . .

TY  - JOUR
AU  - Kovacević, Tihomir
AU  - Rusmirović, Jelena D.
AU  - Tomić, Nataša
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Mitrović, Nenad
AU  - Marinković, Aleksandar
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3089
AB  - The investigation of the influence of acid/base treatment and addition level of non-metallic fractions (NMFs), obtained by processing of printed circuit boards, on the mechanical properties and shrinkage of unsaturated polyester resin (UPR)-based composites was main topic presented in this paper. NMF particles were treated using four different oxidative/etching agents: H2SO4/KMnO4 (NMF1), H2SO4/HNO3 (NMF2), HNO3 (NMF3), and NaOH (NMF4). Treated NMF(1-4) particles were characterized using fourier transform infrared, Boehm titration, optical microscopy and SEM analysis. Tensile strength and micro Vickers hardness of UPR/NMF(1-4) composites were the most improved with addition of 0.5wt% of filler, for 5.9-24.7%, in comparison to composite filled with non-treated NMF particles. Cross-linking density (nu), storage, and loss modulus (G' and G''), damping factor (tan delta) and glass transition temperature (T-g) of the composites were determined from the dynamic-mechanical analysis (DMA) testing. Shrinkage measurements, performed using Aramis 6.2.0, showed significant improvement in shrinkage reducing, for 17.8-30.6%, by introduction the oxidized NMF particles. Qualitative/quantitative evaluation of NMF(1-4) surface functionalities helped in understanding their influences on mechanical, DMA and shrinkage properties change of studied composites. POLYM. COMPOS., 40:1170-1186, 2019.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites
EP  - 1186
IS  - 3
SP  - 1170
VL  - 40
DO  - 10.1002/pc.24827
ER  - 

@article{
author = "Kovacević, Tihomir and Rusmirović, Jelena D. and Tomić, Nataša and Mladenović, Goran and Milošević, Miloš and Mitrović, Nenad and Marinković, Aleksandar",
year = "2019",
abstract = "The investigation of the influence of acid/base treatment and addition level of non-metallic fractions (NMFs), obtained by processing of printed circuit boards, on the mechanical properties and shrinkage of unsaturated polyester resin (UPR)-based composites was main topic presented in this paper. NMF particles were treated using four different oxidative/etching agents: H2SO4/KMnO4 (NMF1), H2SO4/HNO3 (NMF2), HNO3 (NMF3), and NaOH (NMF4). Treated NMF(1-4) particles were characterized using fourier transform infrared, Boehm titration, optical microscopy and SEM analysis. Tensile strength and micro Vickers hardness of UPR/NMF(1-4) composites were the most improved with addition of 0.5wt% of filler, for 5.9-24.7%, in comparison to composite filled with non-treated NMF particles. Cross-linking density (nu), storage, and loss modulus (G' and G''), damping factor (tan delta) and glass transition temperature (T-g) of the composites were determined from the dynamic-mechanical analysis (DMA) testing. Shrinkage measurements, performed using Aramis 6.2.0, showed significant improvement in shrinkage reducing, for 17.8-30.6%, by introduction the oxidized NMF particles. Qualitative/quantitative evaluation of NMF(1-4) surface functionalities helped in understanding their influences on mechanical, DMA and shrinkage properties change of studied composites. POLYM. COMPOS., 40:1170-1186, 2019.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites",
pages = "1186-1170",
number = "3",
volume = "40",
doi = "10.1002/pc.24827"
}

Kovacević, T., Rusmirović, J. D., Tomić, N., Mladenović, G., Milošević, M., Mitrović, N.,& Marinković, A.. (2019). Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites. in Polymer Composites
Wiley, Hoboken., 40(3), 1170-1186.
https://doi.org/10.1002/pc.24827

Kovacević T, Rusmirović JD, Tomić N, Mladenović G, Milošević M, Mitrović N, Marinković A. Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites. in Polymer Composites. 2019;40(3):1170-1186.
doi:10.1002/pc.24827 .

Kovacević, Tihomir, Rusmirović, Jelena D., Tomić, Nataša, Mladenović, Goran, Milošević, Miloš, Mitrović, Nenad, Marinković, Aleksandar, "Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites" in Polymer Composites, 40, no. 3 (2019):1170-1186,
https://doi.org/10.1002/pc.24827 . .

TY  - CONF
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Ž.
AU  - Tadić, Nenad
AU  - Pavlović, Vera P.
AU  - Barišić, Dario
AU  - Pajić, Damir
AU  - Nikolić, Maria Vesna
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6799
AB  - Cobalt/magnesium ferrites with various mole percentage ratio of the metals (obtained structures are CoxMg1-xFe2O4 with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were synthesized by sol-gel combustion synthesis using glycine as fuel, following the rules of propellant chemistry. The powders were then sintered at 700 °C for 3 hours. Obtained powders were characterized by X-Ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, UV/vis diffuse reflectance spectroscopy (DRS). Investigation of the magnetic properties was also conducted by vibrating sample magnetometry (VSM). The obtained powders were proved to be phase-pure cubic spinels which formed agglomerated micrograins. Series of photocatalytic experiments of methylene blue degradation were done. The influence of different experimental conditions was investigated including variations of: pH values, concentrations of the pollutant, masses of the photocatalyst, different light sources and therefore different light irradiation. Interesting results, including enhancement of the degradation rate with the introduction of cobalt into MgFe2O4 and decrease of the degradation rate with further increase of cobalt content and formation of hard agglomerates, open new possibilities for further investigation of the utilisation of Co/Mg ferrites as photocatalysts.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Eighteenth Young Researchers' Conference - Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
T1  - Finding optimal conditions and investigating the structure & morphology of cobalt/magnesium ferrite based cubic spinels (CoxMg1-xFe2O4) as photocatalysts
EP  - 71
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6799
ER  - 

@conference{
author = "Dojčinović, Milena and Vasiljević, Zorka Ž. and Tadić, Nenad and Pavlović, Vera P. and Barišić, Dario and Pajić, Damir and Nikolić, Maria Vesna",
year = "2019",
abstract = "Cobalt/magnesium ferrites with various mole percentage ratio of the metals (obtained structures are CoxMg1-xFe2O4 with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were synthesized by sol-gel combustion synthesis using glycine as fuel, following the rules of propellant chemistry. The powders were then sintered at 700 °C for 3 hours. Obtained powders were characterized by X-Ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, UV/vis diffuse reflectance spectroscopy (DRS). Investigation of the magnetic properties was also conducted by vibrating sample magnetometry (VSM). The obtained powders were proved to be phase-pure cubic spinels which formed agglomerated micrograins. Series of photocatalytic experiments of methylene blue degradation were done. The influence of different experimental conditions was investigated including variations of: pH values, concentrations of the pollutant, masses of the photocatalyst, different light sources and therefore different light irradiation. Interesting results, including enhancement of the degradation rate with the introduction of cobalt into MgFe2O4 and decrease of the degradation rate with further increase of cobalt content and formation of hard agglomerates, open new possibilities for further investigation of the utilisation of Co/Mg ferrites as photocatalysts.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Eighteenth Young Researchers' Conference - Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia",
title = "Finding optimal conditions and investigating the structure & morphology of cobalt/magnesium ferrite based cubic spinels (CoxMg1-xFe2O4) as photocatalysts",
pages = "71-71",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6799"
}

Dojčinović, M., Vasiljević, Z. Ž., Tadić, N., Pavlović, V. P., Barišić, D., Pajić, D.,& Nikolić, M. V.. (2019). Finding optimal conditions and investigating the structure & morphology of cobalt/magnesium ferrite based cubic spinels (CoxMg1-xFe2O4) as photocatalysts. in Program and the Book of Abstracts / Eighteenth Young Researchers' Conference - Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 71-71.
https://hdl.handle.net/21.15107/rcub_machinery_6799

Dojčinović M, Vasiljević ZŽ, Tadić N, Pavlović VP, Barišić D, Pajić D, Nikolić MV. Finding optimal conditions and investigating the structure & morphology of cobalt/magnesium ferrite based cubic spinels (CoxMg1-xFe2O4) as photocatalysts. in Program and the Book of Abstracts / Eighteenth Young Researchers' Conference - Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia. 2019;:71-71.
https://hdl.handle.net/21.15107/rcub_machinery_6799 .

Dojčinović, Milena, Vasiljević, Zorka Ž., Tadić, Nenad, Pavlović, Vera P., Barišić, Dario, Pajić, Damir, Nikolić, Maria Vesna, "Finding optimal conditions and investigating the structure & morphology of cobalt/magnesium ferrite based cubic spinels (CoxMg1-xFe2O4) as photocatalysts" in Program and the Book of Abstracts / Eighteenth Young Researchers' Conference - Materials Sciences and Engineering, December 4-6, 2019, Belgrade, Serbia (2019):71-71,
https://hdl.handle.net/21.15107/rcub_machinery_6799 .

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Pavlović, Vera P.
AU  - Labus, Nebojša J.
AU  - Blagojević, Vladimir A.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3162
AB  - The initial-stage of sintering plays a significant role in determining the final microstructure that defines the main characteristics of electroceramics materials such as functional properties. In this article non-isothermal sintering of non-activated and mechanically activated SrTiO3 samples was investigated up to 1300 degrees C. Dilatometric curves indicate that mechanical activation leads to an earlier onset of sintering, suggesting that it should lead to a more homogenous and denser sintered product. Analysis of the initial stage of sintering reveals that the sintering process of all examinated samples consists of two or three overlapping single-step processes, with a change in the dominant mass transport mechanism. The values of apparent activation energy of the considered single-step process exhibit a significant decrease with an increase in mechanical activation time. The values of the density of samples after isothermal sintering indicate that the final stage of sintering has not been reached by 1300 degrees C.
PB  - ETRAN, Beograd
T2  - Science of Sintering
T1  - Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3
EP  - 208
IS  - 2
SP  - 199
VL  - 51
DO  - 10.2298/SOS1902199Z
ER  - 

@article{
author = "Živojinović, Jelena and Pavlović, Vera P. and Labus, Nebojša J. and Blagojević, Vladimir A. and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2019",
abstract = "The initial-stage of sintering plays a significant role in determining the final microstructure that defines the main characteristics of electroceramics materials such as functional properties. In this article non-isothermal sintering of non-activated and mechanically activated SrTiO3 samples was investigated up to 1300 degrees C. Dilatometric curves indicate that mechanical activation leads to an earlier onset of sintering, suggesting that it should lead to a more homogenous and denser sintered product. Analysis of the initial stage of sintering reveals that the sintering process of all examinated samples consists of two or three overlapping single-step processes, with a change in the dominant mass transport mechanism. The values of apparent activation energy of the considered single-step process exhibit a significant decrease with an increase in mechanical activation time. The values of the density of samples after isothermal sintering indicate that the final stage of sintering has not been reached by 1300 degrees C.",
publisher = "ETRAN, Beograd",
journal = "Science of Sintering",
title = "Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3",
pages = "208-199",
number = "2",
volume = "51",
doi = "10.2298/SOS1902199Z"
}

Živojinović, J., Pavlović, V. P., Labus, N. J., Blagojević, V. A., Kosanović, D.,& Pavlović, V. B.. (2019). Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3. in Science of Sintering
ETRAN, Beograd., 51(2), 199-208.
https://doi.org/10.2298/SOS1902199Z

Živojinović J, Pavlović VP, Labus NJ, Blagojević VA, Kosanović D, Pavlović VB. Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3. in Science of Sintering. 2019;51(2):199-208.
doi:10.2298/SOS1902199Z .

Živojinović, Jelena, Pavlović, Vera P., Labus, Nebojša J., Blagojević, Vladimir A., Kosanović, Darko, Pavlović, Vladimir B., "Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3" in Science of Sintering, 51, no. 2 (2019):199-208,
https://doi.org/10.2298/SOS1902199Z . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Kachlik, Martin
AU  - Maca, Karel
AU  - Olćan, Dragan
AU  - Đorđević, Antonije
AU  - Tshantshapanyan, Ani
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3138
AB  - Sintering of pure cordierite 2MgO:2Al(2)O(3):5SiO(2), and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350 degrees C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Advances in Applied Ceramics
T1  - Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering
EP  - 248
IS  - 5
SP  - 241
VL  - 118
DO  - 10.1080/17436753.2018.1548150
ER  - 

@article{
author = "Obradović, Nina and Pavlović, Vera P. and Kachlik, Martin and Maca, Karel and Olćan, Dragan and Đorđević, Antonije and Tshantshapanyan, Ani and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Sintering of pure cordierite 2MgO:2Al(2)O(3):5SiO(2), and cordierite with the addition of 5 mass % TeO2 was studied. Green bodies were prepared from powder mixtures mechanically activated in a high-energy planetary mill, shaped by uniaxial (20 MPa) and cold isostatic pressing (1000 MPa). The pressure-less sintering of these specimens was performed at 1350 degrees C for 1 h. High relative density over 95% of the theoretical value was obtained through solid-state reaction and pressure-less sintering of powder activated for 40 min, and for the first time reported in the literature. Phase composition and microstructures of sintered samples were determined by XRD and SEM, coupled with EDS mapping. The real part of the complex relative permittivity of the samples was measured at 200 MHz. The loss tangent of all samples was below the resolution of the measurement setup. A strong correlation between the relative permittivity and the density agrees with previously published data.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Advances in Applied Ceramics",
title = "Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering",
pages = "248-241",
number = "5",
volume = "118",
doi = "10.1080/17436753.2018.1548150"
}

Obradović, N., Pavlović, V. P., Kachlik, M., Maca, K., Olćan, D., Đorđević, A., Tshantshapanyan, A., Vlahović, B.,& Pavlović, V. B.. (2019). Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering. in Advances in Applied Ceramics
Taylor & Francis Ltd, Abingdon., 118(5), 241-248.
https://doi.org/10.1080/17436753.2018.1548150

Obradović N, Pavlović VP, Kachlik M, Maca K, Olćan D, Đorđević A, Tshantshapanyan A, Vlahović B, Pavlović VB. Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering. in Advances in Applied Ceramics. 2019;118(5):241-248.
doi:10.1080/17436753.2018.1548150 .

Obradović, Nina, Pavlović, Vera P., Kachlik, Martin, Maca, Karel, Olćan, Dragan, Đorđević, Antonije, Tshantshapanyan, Ani, Vlahović, Branislav, Pavlović, Vladimir B., "Processing and properties of dense cordierite ceramics obtained through solid-state reaction and pressure-less sintering" in Advances in Applied Ceramics, 118, no. 5 (2019):241-248,
https://doi.org/10.1080/17436753.2018.1548150 . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Fahrenholtz, William G.
AU  - Filipović, Suzana
AU  - Kosanović, Darko
AU  - Dapčević, Aleksandra
AU  - Đorđević, Antonije
AU  - Balać, Igor
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3133
AB  - Magnesium aluminate, MgAl2O4 and other alumina-based spinels are ceramics with high hardness, high melting point and mechanical strenght. Spinels can also be used as dielectrics in microwave applications. The goal of this study was to examine the effects of mechanical activation and sintering temperatures on physico-chemical properties of spinel. MgAl2O4 was produced by solid state reaction between MgO and alpha-Al2O3. The starting powders were mixed by ball milling to homogenize without significant particle size reduction. Mechanical activation of mixed powders was performed in a high-energy planetary ball mill in air for 1 h. Powders were compacted at 300 MPa. Heat treatments were performed in air, at temperatures ranging from 1200 to 1600 degrees C with 2 h dwell time, to determine the amount of spinel formation as a function of temperature. Phase composition and microstructure of initial powders and heated samples were determined by means of X-ray diffraction, particle size analysis, and scanning electron microscopy. The influences of milling and consolidation parameters were studied by electrical measurements and mechanical characterization. The main conclusion of this study was that mechanical activation for 60 min initiated a mechano-chemical reaction, resulted in spinel formation at much lower temperatures than within non-activated powders, and indicated that final sintering stage started at much lower temperatures for activated powders. Changes in microstructure parameters, as a consequence of mechanical treatment and subsequent heating of investigated powder mixtures, strongly affect electrical and mechanical properties of the final ceramics.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - The effect of mechanical activation on synthesis and properties of MgAl2O4 ceramics
EP  - 12021
IS  - 9
SP  - 12015
VL  - 45
DO  - 10.1016/j.ceramint.2019.03.095
ER  - 

@article{
author = "Obradović, Nina and Fahrenholtz, William G. and Filipović, Suzana and Kosanović, Darko and Dapčević, Aleksandra and Đorđević, Antonije and Balać, Igor and Pavlović, Vladimir B.",
year = "2019",
abstract = "Magnesium aluminate, MgAl2O4 and other alumina-based spinels are ceramics with high hardness, high melting point and mechanical strenght. Spinels can also be used as dielectrics in microwave applications. The goal of this study was to examine the effects of mechanical activation and sintering temperatures on physico-chemical properties of spinel. MgAl2O4 was produced by solid state reaction between MgO and alpha-Al2O3. The starting powders were mixed by ball milling to homogenize without significant particle size reduction. Mechanical activation of mixed powders was performed in a high-energy planetary ball mill in air for 1 h. Powders were compacted at 300 MPa. Heat treatments were performed in air, at temperatures ranging from 1200 to 1600 degrees C with 2 h dwell time, to determine the amount of spinel formation as a function of temperature. Phase composition and microstructure of initial powders and heated samples were determined by means of X-ray diffraction, particle size analysis, and scanning electron microscopy. The influences of milling and consolidation parameters were studied by electrical measurements and mechanical characterization. The main conclusion of this study was that mechanical activation for 60 min initiated a mechano-chemical reaction, resulted in spinel formation at much lower temperatures than within non-activated powders, and indicated that final sintering stage started at much lower temperatures for activated powders. Changes in microstructure parameters, as a consequence of mechanical treatment and subsequent heating of investigated powder mixtures, strongly affect electrical and mechanical properties of the final ceramics.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "The effect of mechanical activation on synthesis and properties of MgAl2O4 ceramics",
pages = "12021-12015",
number = "9",
volume = "45",
doi = "10.1016/j.ceramint.2019.03.095"
}

Obradović, N., Fahrenholtz, W. G., Filipović, S., Kosanović, D., Dapčević, A., Đorđević, A., Balać, I.,& Pavlović, V. B.. (2019). The effect of mechanical activation on synthesis and properties of MgAl2O4 ceramics. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(9), 12015-12021.
https://doi.org/10.1016/j.ceramint.2019.03.095

Obradović N, Fahrenholtz WG, Filipović S, Kosanović D, Dapčević A, Đorđević A, Balać I, Pavlović VB. The effect of mechanical activation on synthesis and properties of MgAl2O4 ceramics. in Ceramics International. 2019;45(9):12015-12021.
doi:10.1016/j.ceramint.2019.03.095 .

Obradović, Nina, Fahrenholtz, William G., Filipović, Suzana, Kosanović, Darko, Dapčević, Aleksandra, Đorđević, Antonije, Balać, Igor, Pavlović, Vladimir B., "The effect of mechanical activation on synthesis and properties of MgAl2O4 ceramics" in Ceramics International, 45, no. 9 (2019):12015-12021,
https://doi.org/10.1016/j.ceramint.2019.03.095 . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Lević, Steva
AU  - Mitrović, Nebojša
AU  - Maričić, Aleksa
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3100
AB  - Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.
PB  - Springeropen, London
T2  - Journal of Advanced Ceramics
T1  - Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure
EP  - 147
IS  - 1
SP  - 133
VL  - 8
DO  - 10.1007/s40145-018-0301-5
ER  - 

@article{
author = "Filipović, Suzana and Pavlović, Vera P. and Mitrić, Miodrag and Lević, Steva and Mitrović, Nebojša and Maričić, Aleksa and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2019",
abstract = "Multiferroic materials attracted a lot of attention in recent years because of their significant scientific interest and technological applications. The multiferroic core/shell powders have a better connectivity between the phases, resulting in superior dielectric and magneto electric properties. In this study, the influence of preparation condition on structure and properties of BaTiO3/α-Fe2O3 core/shell composite materials was examined. The five samples were obtained by varying synthesis conditions, such as synthesized method (co-precipitation and sonochemical method) and pH values of solution. XRD and Raman spectroscopy analyses were performed in order to determine phase composition and structural changes within samples. Morphology modifications were examined by SEM and EDS analyses. Finally, effect of structural and microstructural changes on magnetic and electrical properties was detected and explained.",
publisher = "Springeropen, London",
journal = "Journal of Advanced Ceramics",
title = "Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure",
pages = "147-133",
number = "1",
volume = "8",
doi = "10.1007/s40145-018-0301-5"
}

Filipović, S., Pavlović, V. P., Mitrić, M., Lević, S., Mitrović, N., Maričić, A., Vlahović, B.,& Pavlović, V. B.. (2019). Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure. in Journal of Advanced Ceramics
Springeropen, London., 8(1), 133-147.
https://doi.org/10.1007/s40145-018-0301-5

Filipović S, Pavlović VP, Mitrić M, Lević S, Mitrović N, Maričić A, Vlahović B, Pavlović VB. Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure. in Journal of Advanced Ceramics. 2019;8(1):133-147.
doi:10.1007/s40145-018-0301-5 .

Filipović, Suzana, Pavlović, Vera P., Mitrić, Miodrag, Lević, Steva, Mitrović, Nebojša, Maričić, Aleksa, Vlahović, Branislav, Pavlović, Vladimir B., "Synthesis and characterization of BaTiO3/α-Fe2O3 core/shell structure" in Journal of Advanced Ceramics, 8, no. 1 (2019):133-147,
https://doi.org/10.1007/s40145-018-0301-5 . .