TY  - JOUR
AU  - Dojčinović, Milena 
AU  - Vasiljević, Zorka Ž.
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena 
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3982
AB  - Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C followed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM microscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.
PB  - MDPI (Basel, Switzerland)
T2  - Chemosensors
T1  - Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites
IS  - 1
SP  - 34
VL  - 11
DO  - https://doi.org/10.3390/chemosensors11010034
ER  - 

@article{
author = "Dojčinović, Milena  and Vasiljević, Zorka Ž. and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena  and Nikolić, Maria Vesna",
year = "2023",
abstract = "Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x ≤ 1) synthesized by a sol-gel combustion method using citric acid as fuel and nitrate ions as oxidizing agents. After the exothermic reaction, amorphous powders were calcined at 700 °C followed by characterization with XRD, FTIR, XPS, EDS and Raman spectroscopy and FESEM microscopy. Synthesized powders were tested as humidity- and temperature-sensing materials in the form of thick films on interdigitated electrodes on alumina substrate in a climatic chamber. The physicochemical investigation of synthesized materials revealed a cubic spinel Fd3m phase, nanosized but agglomerated particles with a partially to completely inverse spinel structure with increasing Ni content. Ni0.1Mg0.9Fe2O4 showed the highest material constant (B30,90) value of 3747 K and temperature sensitivity (α) of −4.08%/K compared to pure magnesium ferrite (B30,90 value of 3426 K and α of −3.73%/K) and the highest average sensitivity towards humidity of 922 kΩ/%RH in the relative humidity (RH) range of 40–90% at the working temperature of 25 °C.",
publisher = "MDPI (Basel, Switzerland)",
journal = "Chemosensors",
title = "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites",
number = "1",
pages = "34",
volume = "11",
doi = "https://doi.org/10.3390/chemosensors11010034"
}

Dojčinović, M., Vasiljević, Z. Ž., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors
MDPI (Basel, Switzerland)., 11(1), 34.
https://doi.org/https://doi.org/10.3390/chemosensors11010034

Dojčinović M, Vasiljević ZŽ, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites. in Chemosensors. 2023;11(1):34.
doi:https://doi.org/10.3390/chemosensors11010034 .

Dojčinović, Milena , Vasiljević, Zorka Ž., Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena , Nikolić, Maria Vesna, "Humidity and Temperature Sensing of Mixed Nickel–Magnesium Spinel Ferrites" in Chemosensors, 11, no. 1 (2023):34,
https://doi.org/https://doi.org/10.3390/chemosensors11010034 . .

TY  - JOUR
AU  - Salih, Rabab
AU  - Veličković, Zlate
AU  - Milošević, Milena
AU  - Pavlović, Vera P.
AU  - Cvijetić, Ilija
AU  - Sofrenić, Ivana V.
AU  - Gržetić, Jelena D.
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3952
AB  - Multifunctional lignin bio-based adsorbent, b-LMS, was obtained via inverse copolymerization in the suspension of acryloyl modified kraft lignin (KfL-AA) and bio-based trimethylolpropane triacrylate (bio-TMPTA). Morphological and structural characterization of KfL-AA and b-LMS was performed using BET, FTIR, Raman, NMR, TGA, SEM, and XPS techniques. The b-LMS microspheres with 253 ± 42 μm diameters, 69.4 m2 g−1 surface area, and 59% porosity efficiently adsorb Malachite Green (MG), Tartrazine (T), and Methyl Red (MR) dye. The influence of pH, pollutant concentration, temperature, and time on the removal efficiency was studied in a batch mode. Favorable and spontaneous processes with high adsorption capacities e.g. 116.8 mg g−1 for MG, 86.8 mg g−1 for T, and 68.6 mg g−1 for MR indicate the significant adsorptive potential of b-LMS. Results from diffusional and single mass transfer resistance studies indicate that pore diffusion is a rate-limiting step. Theoretical calculations confirmed a higher affinity of b-LMS to cationic dye MG compared with an anionic and neutral one, i.e. T and MR, respectively. The data fitting from a flow system, using semi-empirical equations and Pore Surface Diffusion Modelling (PSDM) provided breakthrough point determination. The results from the desorption and competitive adsorption study proved the exceptional performance of b-LMS. Moreover, sulfation of b-LMS, i.e.production of b-LMS-OSO3H, introduced high-affinity sulfate groups with respect to cationic dye and cations. Developed methodology implements the principle of sustainable development and offers concept whose results contribute to the minimization of environmental pollution.
PB  - Elsevier
T2  - Journal of Environmental Management
T1  - Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study
IS  - January
SP  - 116838
VL  - 326
DO  - 10.1016/j.jenvman.2022.116838
ER  - 

@article{
author = "Salih, Rabab and Veličković, Zlate and Milošević, Milena and Pavlović, Vera P. and Cvijetić, Ilija and Sofrenić, Ivana V. and Gržetić, Jelena D. and Marinković, Aleksandar",
year = "2023",
abstract = "Multifunctional lignin bio-based adsorbent, b-LMS, was obtained via inverse copolymerization in the suspension of acryloyl modified kraft lignin (KfL-AA) and bio-based trimethylolpropane triacrylate (bio-TMPTA). Morphological and structural characterization of KfL-AA and b-LMS was performed using BET, FTIR, Raman, NMR, TGA, SEM, and XPS techniques. The b-LMS microspheres with 253 ± 42 μm diameters, 69.4 m2 g−1 surface area, and 59% porosity efficiently adsorb Malachite Green (MG), Tartrazine (T), and Methyl Red (MR) dye. The influence of pH, pollutant concentration, temperature, and time on the removal efficiency was studied in a batch mode. Favorable and spontaneous processes with high adsorption capacities e.g. 116.8 mg g−1 for MG, 86.8 mg g−1 for T, and 68.6 mg g−1 for MR indicate the significant adsorptive potential of b-LMS. Results from diffusional and single mass transfer resistance studies indicate that pore diffusion is a rate-limiting step. Theoretical calculations confirmed a higher affinity of b-LMS to cationic dye MG compared with an anionic and neutral one, i.e. T and MR, respectively. The data fitting from a flow system, using semi-empirical equations and Pore Surface Diffusion Modelling (PSDM) provided breakthrough point determination. The results from the desorption and competitive adsorption study proved the exceptional performance of b-LMS. Moreover, sulfation of b-LMS, i.e.production of b-LMS-OSO3H, introduced high-affinity sulfate groups with respect to cationic dye and cations. Developed methodology implements the principle of sustainable development and offers concept whose results contribute to the minimization of environmental pollution.",
publisher = "Elsevier",
journal = "Journal of Environmental Management",
title = "Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study",
number = "January",
pages = "116838",
volume = "326",
doi = "10.1016/j.jenvman.2022.116838"
}

Salih, R., Veličković, Z., Milošević, M., Pavlović, V. P., Cvijetić, I., Sofrenić, I. V., Gržetić, J. D.,& Marinković, A.. (2023). Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study. in Journal of Environmental Management
Elsevier., 326(January), 116838.
https://doi.org/10.1016/j.jenvman.2022.116838

Salih R, Veličković Z, Milošević M, Pavlović VP, Cvijetić I, Sofrenić IV, Gržetić JD, Marinković A. Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study. in Journal of Environmental Management. 2023;326(January):116838.
doi:10.1016/j.jenvman.2022.116838 .

Salih, Rabab, Veličković, Zlate, Milošević, Milena, Pavlović, Vera P., Cvijetić, Ilija, Sofrenić, Ivana V., Gržetić, Jelena D., Marinković, Aleksandar, "Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study" in Journal of Environmental Management, 326, no. January (2023):116838,
https://doi.org/10.1016/j.jenvman.2022.116838 . .

TY  - JOUR
AU  - Salih, Rabab
AU  - Veličković, Zlate
AU  - Milošević, Milena
AU  - Pavlović, Vera P.
AU  - Cvijetić, Ilija
AU  - Sofrenić, Ivana V.
AU  - Gržetić, Jelena D.
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7310
AB  - Multifunctional lignin bio-based adsorbent, b-LMS, was obtained via inverse copolymerization in the suspension of acryloyl modified kraft lignin (KfL-AA) and bio-based trimethylolpropane triacrylate (bio-TMPTA). Morphological and structural characterization of KfL-AA and b-LMS was performed using BET, FTIR, Raman, NMR, TGA, SEM, and XPS techniques. The b-LMS microspheres with 253 ± 42 μm diameters, 69.4 m2 g−1 surface area, and 59% porosity efficiently adsorb Malachite Green (MG), Tartrazine (T), and Methyl Red (MR) dye. The influence of pH, pollutant concentration, temperature, and time on the removal efficiency was studied in a batch mode. Favorable and spontaneous processes with high adsorption capacities e.g. 116.8 mg g−1 for MG, 86.8 mg g−1 for T, and 68.6 mg g−1 for MR indicate the significant adsorptive potential of b-LMS. Results from diffusional and single mass transfer resistance studies indicate that pore diffusion is a rate-limiting step. Theoretical calculations confirmed a higher affinity of b-LMS to cationic dye MG compared with an anionic and neutral one, i.e. T and MR, respectively. The data fitting from a flow system, using semi-empirical equations and Pore Surface Diffusion Modelling (PSDM) provided breakthrough point determination. The results from the desorption and competitive adsorption study proved the exceptional performance of b-LMS. Moreover, sulfation of b-LMS, i.e.production of b-LMS-OSO3H, introduced high-affinity sulfate groups with respect to cationic dye and cations. Developed methodology implements the principle of sustainable development and offers concept whose results contribute to the minimization of environmental pollution.
PB  - Elsevier
T2  - Journal of Environmental Management
T1  - Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study
SP  - 116838
VL  - 326
DO  - 10.1016/j.jenvman.2022.116838
ER  - 

@article{
author = "Salih, Rabab and Veličković, Zlate and Milošević, Milena and Pavlović, Vera P. and Cvijetić, Ilija and Sofrenić, Ivana V. and Gržetić, Jelena D. and Marinković, Aleksandar",
year = "2023",
abstract = "Multifunctional lignin bio-based adsorbent, b-LMS, was obtained via inverse copolymerization in the suspension of acryloyl modified kraft lignin (KfL-AA) and bio-based trimethylolpropane triacrylate (bio-TMPTA). Morphological and structural characterization of KfL-AA and b-LMS was performed using BET, FTIR, Raman, NMR, TGA, SEM, and XPS techniques. The b-LMS microspheres with 253 ± 42 μm diameters, 69.4 m2 g−1 surface area, and 59% porosity efficiently adsorb Malachite Green (MG), Tartrazine (T), and Methyl Red (MR) dye. The influence of pH, pollutant concentration, temperature, and time on the removal efficiency was studied in a batch mode. Favorable and spontaneous processes with high adsorption capacities e.g. 116.8 mg g−1 for MG, 86.8 mg g−1 for T, and 68.6 mg g−1 for MR indicate the significant adsorptive potential of b-LMS. Results from diffusional and single mass transfer resistance studies indicate that pore diffusion is a rate-limiting step. Theoretical calculations confirmed a higher affinity of b-LMS to cationic dye MG compared with an anionic and neutral one, i.e. T and MR, respectively. The data fitting from a flow system, using semi-empirical equations and Pore Surface Diffusion Modelling (PSDM) provided breakthrough point determination. The results from the desorption and competitive adsorption study proved the exceptional performance of b-LMS. Moreover, sulfation of b-LMS, i.e.production of b-LMS-OSO3H, introduced high-affinity sulfate groups with respect to cationic dye and cations. Developed methodology implements the principle of sustainable development and offers concept whose results contribute to the minimization of environmental pollution.",
publisher = "Elsevier",
journal = "Journal of Environmental Management",
title = "Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study",
pages = "116838",
volume = "326",
doi = "10.1016/j.jenvman.2022.116838"
}

Salih, R., Veličković, Z., Milošević, M., Pavlović, V. P., Cvijetić, I., Sofrenić, I. V., Gržetić, J. D.,& Marinković, A.. (2023). Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study. in Journal of Environmental Management
Elsevier., 326, 116838.
https://doi.org/10.1016/j.jenvman.2022.116838

Salih R, Veličković Z, Milošević M, Pavlović VP, Cvijetić I, Sofrenić IV, Gržetić JD, Marinković A. Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study. in Journal of Environmental Management. 2023;326:116838.
doi:10.1016/j.jenvman.2022.116838 .

Salih, Rabab, Veličković, Zlate, Milošević, Milena, Pavlović, Vera P., Cvijetić, Ilija, Sofrenić, Ivana V., Gržetić, Jelena D., Marinković, Aleksandar, "Lignin based microspheres for effective dyes removal: Design, synthesis and adsorption mechanism supported with theoretical study" in Journal of Environmental Management, 326 (2023):116838,
https://doi.org/10.1016/j.jenvman.2022.116838 . .

TY  - CONF
AU  - Pavlović, Vladimir B.
AU  - Milosavljević, Nataša
AU  - Pavlović, Vera P.
AU  - Vlahović, Branislav
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7311
AB  - COVID-19 pandemic quickly evolved from health crisis into an economic, cultural and social crisis. According to International Association of Universities global survey report, many universities already for see the impacts of economic crisis on students and their families, face the closure for short, medium or long term, while social distancing measurements urge universities to develop e-courses and to move towards ”emergency online education”. In order to provide access for all students to global virtual educational environment, with differentiated and individualized learning tools, we focus on cooperation for innovation in digitally-supported education, the exchange of good practices teaching/learning experiences in the field sof web-based education and capacity building by creating the laboratory for Artificial Intelligence (AI), heuristics and bioinformatics at the University of Belgrade-Faculty of Agriculture. The main idea is to create eEDUCANeT platform for students and academic staff for pedagogical use of digital technologies and AI in teaching, learning and research.
PB  - Berlin, Boston: De Gruyter, 2023
C3  - Mathematics for Human Flourishing in the Time of COVID-19 and Post COVID-19: Proceedings of the Workshop held at the Faculty of Mechanical Engineering, University of Niš, Niš, 21 of October 2020
T1  - Artificial intelligence and digital technologies in digitally-supported university education
EP  - 202
SP  - 195
DO  - 10.1515/9783110734119-017
ER  - 

@conference{
author = "Pavlović, Vladimir B. and Milosavljević, Nataša and Pavlović, Vera P. and Vlahović, Branislav",
year = "2023",
abstract = "COVID-19 pandemic quickly evolved from health crisis into an economic, cultural and social crisis. According to International Association of Universities global survey report, many universities already for see the impacts of economic crisis on students and their families, face the closure for short, medium or long term, while social distancing measurements urge universities to develop e-courses and to move towards ”emergency online education”. In order to provide access for all students to global virtual educational environment, with differentiated and individualized learning tools, we focus on cooperation for innovation in digitally-supported education, the exchange of good practices teaching/learning experiences in the field sof web-based education and capacity building by creating the laboratory for Artificial Intelligence (AI), heuristics and bioinformatics at the University of Belgrade-Faculty of Agriculture. The main idea is to create eEDUCANeT platform for students and academic staff for pedagogical use of digital technologies and AI in teaching, learning and research.",
publisher = "Berlin, Boston: De Gruyter, 2023",
journal = "Mathematics for Human Flourishing in the Time of COVID-19 and Post COVID-19: Proceedings of the Workshop held at the Faculty of Mechanical Engineering, University of Niš, Niš, 21 of October 2020",
title = "Artificial intelligence and digital technologies in digitally-supported university education",
pages = "202-195",
doi = "10.1515/9783110734119-017"
}

Pavlović, V. B., Milosavljević, N., Pavlović, V. P.,& Vlahović, B.. (2023). Artificial intelligence and digital technologies in digitally-supported university education. in Mathematics for Human Flourishing in the Time of COVID-19 and Post COVID-19: Proceedings of the Workshop held at the Faculty of Mechanical Engineering, University of Niš, Niš, 21 of October 2020
Berlin, Boston: De Gruyter, 2023., 195-202.
https://doi.org/10.1515/9783110734119-017

Pavlović VB, Milosavljević N, Pavlović VP, Vlahović B. Artificial intelligence and digital technologies in digitally-supported university education. in Mathematics for Human Flourishing in the Time of COVID-19 and Post COVID-19: Proceedings of the Workshop held at the Faculty of Mechanical Engineering, University of Niš, Niš, 21 of October 2020. 2023;:195-202.
doi:10.1515/9783110734119-017 .

Pavlović, Vladimir B., Milosavljević, Nataša, Pavlović, Vera P., Vlahović, Branislav, "Artificial intelligence and digital technologies in digitally-supported university education" in Mathematics for Human Flourishing in the Time of COVID-19 and Post COVID-19: Proceedings of the Workshop held at the Faculty of Mechanical Engineering, University of Niš, Niš, 21 of October 2020 (2023):195-202,
https://doi.org/10.1515/9783110734119-017 . .

TY  - CONF
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Ž.
AU  - Rakočević, Lazar
AU  - Pavlović, Vera P.
AU  - Ammar-Merah, Souad
AU  - Vujančević, Jelena
AU  - Nikolić, Maria Vesna
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7269
AB  - Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.
PB  - University of Novi Sad, Faculty of Technology, Novi Sad, Serbia
C3  - CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia
T1  - Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7269
ER  - 

@conference{
author = "Dojčinović, Milena and Vasiljević, Zorka Ž. and Rakočević, Lazar and Pavlović, Vera P. and Ammar-Merah, Souad and Vujančević, Jelena and Nikolić, Maria Vesna",
year = "2023",
abstract = "Mixed spinel ferrites MgxNi1-xFe2O4 were synthesized via sol-gel combustion synthesis with citric acid as fuel, followed by calcination at 700 °C for 3 hours. Obtained powders were characterized via X-ray diffraction analysis (XRD), X-ray photoelectron (XPS), FTIR and Raman spectroscopy and FESEM microscopy. Elemental composition was examined via energy dispersive spectroscopy (EDS). Humidity sensing properties were tested by measuring AC impedance in a climactic chamber at 25 °C and in the relative humidity range of 40–90%. Temperature sensing properties were tested by measuring DC resistance at 40% RH in the temperature range 40–90 °C. Synthesized powders were proven to be pure spinel Fd 3m phase with spherical, slightly agglomerated particles. Substitution of Mg with Ni results in structural changes such as a change in inversion parameter and particle agglomeration, which influences sensing properties of the material. Results show that the sensing properties of magnesium ferrite, which is already a well-established NTC sensor, can be improved by incorporating 10% of nickel in the spinel lattice structure. Mg0.9Ni0.1Fe2O4 exhibited higher temperature sensitivity and higher sensitivity towards humidity compared to MgFe2O4, while further substitution of Mg with Ni resulted in the decline of sensing properties, increase in particle size and agglomeration degree.",
publisher = "University of Novi Sad, Faculty of Technology, Novi Sad, Serbia",
journal = "CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia",
title = "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7269"
}

Dojčinović, M., Vasiljević, Z. Ž., Rakočević, L., Pavlović, V. P., Ammar-Merah, S., Vujančević, J.,& Nikolić, M. V.. (2023). Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia
University of Novi Sad, Faculty of Technology, Novi Sad, Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_7269

Dojčinović M, Vasiljević ZŽ, Rakočević L, Pavlović VP, Ammar-Merah S, Vujančević J, Nikolić MV. Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7269 .

Dojčinović, Milena, Vasiljević, Zorka Ž., Rakočević, Lazar, Pavlović, Vera P., Ammar-Merah, Souad, Vujančević, Jelena, Nikolić, Maria Vesna, "Magnesium substitution with nickel and its influence on the sensing properties of MgFe2O4" in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, Programme and Book of Abstracts; October 11-14, 2023, Novi Sad, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7269 .

TY  - JOUR
AU  - Djoković, Vladimir
AU  - Dudić, Duško
AU  - Dojčilović, Radovan
AU  - Marinković, Filip
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7071
AB  - Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.
PB  - IOP Publishing Ltd
T2  - Physica Scripta
T1  - Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content
IS  - 11
SP  - 115932
VL  - 98
DO  - 10.1088/1402-4896/acff4d
ER  - 

@article{
author = "Djoković, Vladimir and Dudić, Duško and Dojčilović, Radovan and Marinković, Filip and Pavlović, Vera P. and Pavlović, Vladimir B. and Vlahović, Branislav",
year = "2023",
abstract = "Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.",
publisher = "IOP Publishing Ltd",
journal = "Physica Scripta",
title = "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content",
number = "11",
pages = "115932",
volume = "98",
doi = "10.1088/1402-4896/acff4d"
}

Djoković, V., Dudić, D., Dojčilović, R., Marinković, F., Pavlović, V. P., Pavlović, V. B.,& Vlahović, B.. (2023). Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta
IOP Publishing Ltd., 98(11), 115932.
https://doi.org/10.1088/1402-4896/acff4d

Djoković V, Dudić D, Dojčilović R, Marinković F, Pavlović VP, Pavlović VB, Vlahović B. Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta. 2023;98(11):115932.
doi:10.1088/1402-4896/acff4d .

Djoković, Vladimir, Dudić, Duško, Dojčilović, Radovan, Marinković, Filip, Pavlović, Vera P., Pavlović, Vladimir B., Vlahović, Branislav, "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content" in Physica Scripta, 98, no. 11 (2023):115932,
https://doi.org/10.1088/1402-4896/acff4d . .

TY  - JOUR
AU  - Djoković, Vladimir
AU  - Dudić, Duško
AU  - Dojčilović, Radovan
AU  - Marinković, Filip
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7061
AB  - Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.
PB  - IOP Publishing Ltd
T2  - Physica Scripta
T1  - Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content
IS  - 11
SP  - 115932
VL  - 98
DO  - 10.1088/1402-4896/acff4d
ER  - 

@article{
author = "Djoković, Vladimir and Dudić, Duško and Dojčilović, Radovan and Marinković, Filip and Pavlović, Vera P. and Pavlović, Vladimir B. and Vlahović, Branislav",
year = "2023",
abstract = "Barium titanate (BT) perovskite particles were surface modified by means of mechanical treatment and used as inorganic component in polyvinylidene fluoride (PVDF) based composites. The changes in electrical properties of the composite films with increasing in filler content were followed by dielectric spectroscopy, breakdown strength and D-E measurements. A comparison of the properties of the composites prepared with untreated and mechanically activated particles revealed that there is a significant difference in their performances at low filler concentrations (<20 wt%). Introduction of the surface modified ceramic particles into PVDF matrix led to an increase of the dielectric constant without affecting significantly the electrical breakdown strength. In contrast, when as received BT particles were used a filler, both dielectric constants and breakdown strengths of the composite films were lower than the corresponding values observed for the pure PVDF. At higher concentrations, however, the influence of pre-treatment of the filler on the effective electrical properties becomes less significant. The obtained results were discussed in terms of the pronounced crystallization of polar β and γ crystal phases of PVDF in the presence of surface modified BT fillers, which is confirmed by Raman spectroscopy.",
publisher = "IOP Publishing Ltd",
journal = "Physica Scripta",
title = "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content",
number = "11",
pages = "115932",
volume = "98",
doi = "10.1088/1402-4896/acff4d"
}

Djoković, V., Dudić, D., Dojčilović, R., Marinković, F., Pavlović, V. P., Pavlović, V. B.,& Vlahović, B.. (2023). Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta
IOP Publishing Ltd., 98(11), 115932.
https://doi.org/10.1088/1402-4896/acff4d

Djoković V, Dudić D, Dojčilović R, Marinković F, Pavlović VP, Pavlović VB, Vlahović B. Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content. in Physica Scripta. 2023;98(11):115932.
doi:10.1088/1402-4896/acff4d .

Djoković, Vladimir, Dudić, Duško, Dojčilović, Radovan, Marinković, Filip, Pavlović, Vera P., Pavlović, Vladimir B., Vlahović, Branislav, "Toward improved PVDF-BaTiO3 composite dielectrics: mechanical activation of the filler versus filler content" in Physica Scripta, 98, no. 11 (2023):115932,
https://doi.org/10.1088/1402-4896/acff4d . .

TY  - JOUR
AU  - Anđelković, Ljubica
AU  - Šuljagić, Marija
AU  - Mirković, Miljana
AU  - Pavlović, Vera P.
AU  - Petronijević, Ivan
AU  - Stanković, Dalibor M.
AU  - Jeremić, Dejan
AU  - Uskoković, Vuk
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7060
AB  - The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale.
PB  - Elsevier
T2  - Ceramics International
T1  - Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition
EP  - 23498
SP  - 23491
VL  - 49
DO  - 10.1016/j.ceramint.2023.04.182
ER  - 

@article{
author = "Anđelković, Ljubica and Šuljagić, Marija and Mirković, Miljana and Pavlović, Vera P. and Petronijević, Ivan and Stanković, Dalibor M. and Jeremić, Dejan and Uskoković, Vuk",
year = "2023",
abstract = "The combination of an intense absorption of visible light and p-type semiconducting nature makes spinel cobalt oxide (Co3O4) a very attractive material for various optoelectronic applications. However, the traditional methods for its synthesis have been either time- and energy-consuming or relying on toxic chemicals. To solve this issue, a simple, facile, and eco-friendly method of synthesis was successfully developed to obtain spinel Co3O4 nanoparticles. The novel method for obtaining pure and monophasic Co3O4 reported here is based on the thermal decomposition of hexaaquacobalt(II) D-camphor10-sulfonate at 900 °C. This fast solid-state synthesis route overcomes the disadvantages of many combustion methods, most critically by avoiding the use of toxic organic solvents. The synthesized material was subjected to a detailed characterization to assess its potential for use as a nanocatalyst. The band gap measurements indicated the presence of two band gaps, one at 2.10 eV and another at 1.22 eV, confirming the purity and semiconducting properties of the sample. The electrochemical studies demonstrated a significant enhancement in the electron transfer kinetics with the addition of the synthesized Co3O4 to the carbon-paste electrode, leading to an enhanced electrocatalytic performance. These prominent functional properties, suitable for a wide range of technological applications, pave way for the implementation of the reported method for the synthesis of Co3O4 on a larger industrial scale.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition",
pages = "23498-23491",
volume = "49",
doi = "10.1016/j.ceramint.2023.04.182"
}

Anđelković, L., Šuljagić, M., Mirković, M., Pavlović, V. P., Petronijević, I., Stanković, D. M., Jeremić, D.,& Uskoković, V.. (2023). Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International
Elsevier., 49, 23491-23498.
https://doi.org/10.1016/j.ceramint.2023.04.182

Anđelković L, Šuljagić M, Mirković M, Pavlović VP, Petronijević I, Stanković DM, Jeremić D, Uskoković V. Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition. in Ceramics International. 2023;49:23491-23498.
doi:10.1016/j.ceramint.2023.04.182 .

Anđelković, Ljubica, Šuljagić, Marija, Mirković, Miljana, Pavlović, Vera P., Petronijević, Ivan, Stanković, Dalibor M., Jeremić, Dejan, Uskoković, Vuk, "Semiconducting cobalt oxide nanocatalyst obtained through an eco-friendly thermal decomposition" in Ceramics International, 49 (2023):23491-23498,
https://doi.org/10.1016/j.ceramint.2023.04.182 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Đokić, Veljko
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Ćirković, Jovana
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Karoui, Abdennaceur
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6323
AB  - In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.
PB  - MDPI
T2  - Catalysts
T1  - Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal
IS  - 2
SP  - 352
VL  - 13
DO  - 10.3390/catal13020352
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Đokić, Veljko and Blagojević, Vladimir A. and Pavlović, Vera P. and Ćirković, Jovana and Horvath, Endre and Forro, Laszlo and Karoui, Abdennaceur and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2023",
abstract = "In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.",
publisher = "MDPI",
journal = "Catalysts",
title = "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal",
number = "2",
pages = "352",
volume = "13",
doi = "10.3390/catal13020352"
}

Vujančević, J., Andričević, P., Đokić, V., Blagojević, V. A., Pavlović, V. P., Ćirković, J., Horvath, E., Forro, L., Karoui, A., Pavlović, V. B.,& Janaćković, Đ.. (2023). Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts
MDPI., 13(2), 352.
https://doi.org/10.3390/catal13020352

Vujančević J, Andričević P, Đokić V, Blagojević VA, Pavlović VP, Ćirković J, Horvath E, Forro L, Karoui A, Pavlović VB, Janaćković Đ. Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts. 2023;13(2):352.
doi:10.3390/catal13020352 .

Vujančević, Jelena, Andričević, Pavao, Đokić, Veljko, Blagojević, Vladimir A., Pavlović, Vera P., Ćirković, Jovana, Horvath, Endre, Forro, Laszlo, Karoui, Abdennaceur, Pavlović, Vladimir B., Janaćković, Đorđe, "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal" in Catalysts, 13, no. 2 (2023):352,
https://doi.org/10.3390/catal13020352 . .

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Pavlović, Vera P.
AU  - Kovačević, Danijela
AU  - Perić, Marko
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Filipović, Suzana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3689
AB  - The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.
PB  - MDPI, Basel
T2  - Polymers
T1  - Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials
IS  - 9
SP  - 1819
VL  - 14
DO  - 10.3390/polym14091819
ER  - 

@article{
author = "Janićijević, Aleksandra and Pavlović, Vera P. and Kovačević, Danijela and Perić, Marko and Vlahović, Branislav and Pavlović, Vladimir B. and Filipović, Suzana",
year = "2022",
abstract = "The rise of innovation in the electrical industry is driven by the controlled design of new materials. The hybrid materials based on magnetite/nanocellulose are highly interesting due to their various applications in medicine, ecology, catalysis and electronics. In this study, the structure and morphology of nanocellulose/magnetite hybrid nanomaterials were investigated. The effect of nanocellulose loading on the crystal structure of synthesized composites was investigated by XRD and FTIR methods. The presented study reveals that the interaction between the cellulose and magnetic nanoparticles depends on the nanocellulose content. Further, a transition from cellulose II to cellulose I allomorph is observed. SEM and EDS are employed to determine the variation in morphology with changes in component concentrations. By the calculation of magnetic interactions between adjacent Fe3+ and Fe2+ ions within composites, it is determined that ferromagnetic coupling predominates.",
publisher = "MDPI, Basel",
journal = "Polymers",
title = "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials",
number = "9",
pages = "1819",
volume = "14",
doi = "10.3390/polym14091819"
}

Janićijević, A., Pavlović, V. P., Kovačević, D., Perić, M., Vlahović, B., Pavlović, V. B.,& Filipović, S.. (2022). Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers
MDPI, Basel., 14(9), 1819.
https://doi.org/10.3390/polym14091819

Janićijević A, Pavlović VP, Kovačević D, Perić M, Vlahović B, Pavlović VB, Filipović S. Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials. in Polymers. 2022;14(9):1819.
doi:10.3390/polym14091819 .

Janićijević, Aleksandra, Pavlović, Vera P., Kovačević, Danijela, Perić, Marko, Vlahović, Branislav, Pavlović, Vladimir B., Filipović, Suzana, "Structural Characterization of Nanocellulose/Fe3O4 Hybrid Nanomaterials" in Polymers, 14, no. 9 (2022):1819,
https://doi.org/10.3390/polym14091819 . .

TY  - JOUR
AU  - Đukić, Dunja
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Pavlović, Vera P.
AU  - Bučevac, Dušan
AU  - Vrbica, Boško
AU  - Mirković, Miljana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4064
AB  - The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.
PB  - ETRAN
T2  - Science of Sintering
T1  - Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials
EP  - 294
IS  - 3
SP  - 287
VL  - 54
DO  - 10.2298/SOS2203287D
ER  - 

@article{
author = "Đukić, Dunja and Šuljagić, Marija and Anđelković, Ljubica and Pavlović, Vera P. and Bučevac, Dušan and Vrbica, Boško and Mirković, Miljana",
year = "2022",
abstract = "The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials",
pages = "294-287",
number = "3",
volume = "54",
doi = "10.2298/SOS2203287D"
}

Đukić, D., Šuljagić, M., Anđelković, L., Pavlović, V. P., Bučevac, D., Vrbica, B.,& Mirković, M.. (2022). Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering
ETRAN., 54(3), 287-294.
https://doi.org/10.2298/SOS2203287D

Đukić D, Šuljagić M, Anđelković L, Pavlović VP, Bučevac D, Vrbica B, Mirković M. Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering. 2022;54(3):287-294.
doi:10.2298/SOS2203287D .

Đukić, Dunja, Šuljagić, Marija, Anđelković, Ljubica, Pavlović, Vera P., Bučevac, Dušan, Vrbica, Boško, Mirković, Miljana, "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials" in Science of Sintering, 54, no. 3 (2022):287-294,
https://doi.org/10.2298/SOS2203287D . .

TY  - CONF
AU  - Dojčinović, Milena 
AU  - Vasiljević, Zorka Ž.
AU  - Pavlović, Vera P.
AU  - Vujančević, Jelena
AU  - Tadić, Nenad
AU  - Nikolić, Maria Vesna
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4225
AB  - Problems that countries all over the world have in common are dependence of economy and energy production on fossil fuels. There is a growing need for energy production and storage routes that are safe for the environment, renewable, efficient and cheap. One of the directions in which science is moving forward is discovering materials suitable for use in batteries and supercapacitors to improve their operating potential, electrical capacity or biocompatibility. The objective is also to synthesize materials for batteries or supercapacitors that are cheap, consist of earth abundant elements and have high electrochemical activity.In this work, mixed nickel-magnesium ferrites NixMg1−xFe2O4, with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1, were synthesized via sol-gel combustion synthesis with citric acid used as fuel and nitrate ions used as oxidizing agents. Combusted powders were calcined at 700 °C. The structure and morphology of the powders were characterized with X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM), Raman and FTIR spectroscopy. The band gap was calculated by using UV/Vis diffuse reflectance spectroscopy (DRS). Samples were cast on nickel foam and tested as energy storage materials in a three-electrode setup in 3 M KOH aqueous solution as electrolyte. The methods used were cyclic voltammetry (CV) and constant current chronopotentiometry to obtain galvanostatic charge-discharge (GCD) curves. Results show that all of the synthesized materials show battery-type charge storage in alkaline electrolyte due to the formation of metal cation oxyhydroxides. With increasing nickel content, electrochemical activity drops. The highest value of capacity, 34.3 mA h g-1 at the current density of 500 mA g-1 is ascribed to magnesium ferrite, MgFe2O4.
PB  - University of Belgrade, Faculty of Physical Chemistry, Belgrade, Serbia
C3  - COIN2022 - Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 - Program and Book of Abstracts, June 1-2, 2022
T1  - Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4225
ER  - 

@conference{
author = "Dojčinović, Milena  and Vasiljević, Zorka Ž. and Pavlović, Vera P. and Vujančević, Jelena and Tadić, Nenad and Nikolić, Maria Vesna",
year = "2022",
abstract = "Problems that countries all over the world have in common are dependence of economy and energy production on fossil fuels. There is a growing need for energy production and storage routes that are safe for the environment, renewable, efficient and cheap. One of the directions in which science is moving forward is discovering materials suitable for use in batteries and supercapacitors to improve their operating potential, electrical capacity or biocompatibility. The objective is also to synthesize materials for batteries or supercapacitors that are cheap, consist of earth abundant elements and have high electrochemical activity.In this work, mixed nickel-magnesium ferrites NixMg1−xFe2O4, with x being 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1, were synthesized via sol-gel combustion synthesis with citric acid used as fuel and nitrate ions used as oxidizing agents. Combusted powders were calcined at 700 °C. The structure and morphology of the powders were characterized with X-ray diffraction method (XRD), field emission scanning electron microscopy (FESEM), Raman and FTIR spectroscopy. The band gap was calculated by using UV/Vis diffuse reflectance spectroscopy (DRS). Samples were cast on nickel foam and tested as energy storage materials in a three-electrode setup in 3 M KOH aqueous solution as electrolyte. The methods used were cyclic voltammetry (CV) and constant current chronopotentiometry to obtain galvanostatic charge-discharge (GCD) curves. Results show that all of the synthesized materials show battery-type charge storage in alkaline electrolyte due to the formation of metal cation oxyhydroxides. With increasing nickel content, electrochemical activity drops. The highest value of capacity, 34.3 mA h g-1 at the current density of 500 mA g-1 is ascribed to magnesium ferrite, MgFe2O4.",
publisher = "University of Belgrade, Faculty of Physical Chemistry, Belgrade, Serbia",
journal = "COIN2022 - Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 - Program and Book of Abstracts, June 1-2, 2022",
title = "Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4225"
}

Dojčinović, M., Vasiljević, Z. Ž., Pavlović, V. P., Vujančević, J., Tadić, N.,& Nikolić, M. V.. (2022). Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes. in COIN2022 - Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 - Program and Book of Abstracts, June 1-2, 2022
University of Belgrade, Faculty of Physical Chemistry, Belgrade, Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_4225

Dojčinović M, Vasiljević ZŽ, Pavlović VP, Vujančević J, Tadić N, Nikolić MV. Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes. in COIN2022 - Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 - Program and Book of Abstracts, June 1-2, 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4225 .

Dojčinović, Milena , Vasiljević, Zorka Ž., Pavlović, Vera P., Vujančević, Jelena, Tadić, Nenad, Nikolić, Maria Vesna, "Mixed Ni-Mg Spinel Ferrites Used as Materials for Charge Storage Electrodes" in COIN2022 - Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 - Program and Book of Abstracts, June 1-2, 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4225 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Blagojević, Vladimir A.
AU  - Andričević, Pavao
AU  - Pavlović, Vera P.
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4226
AB  - The aim of this study was to investigate the influence of the deposition of vanadium oxide epitaxial layer on the photoresponse of TiO2/CH3NH3PbI3 heterojunction. TiO2 nanotube array was synthesized via anodization of titanium foil at three different voltages. After annealing at 450 °C, vanadium oxide was deposited by direct deposition from vanadyl(IV) sulfate solution. Microstructure analysis has been used for the investigation of the influence of different voltages of anodization on tube diameter. Spectroscopy measurements pointed out the red shift in diffusion reflectance spectra after deposition of vanadium oxide. The presence of V5+ oxidation state has been detected on the surface of nanotube arrays by chemical analysis. CH3NH3PbI3 monocrystal was dry pressed on top of the nanotubes in order to make a photodiode. The current-voltage characteristics of the photodiode were recorded and it was observed that the sample with the smallest wall thickness and higher amount of vanadium has the best photocurrent response.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts / Serbian Ceramic Society Conference - Advanced Ceramics and Application X, New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
T1  - Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4226
ER  - 

@conference{
author = "Vujančević, Jelena and Blagojević, Vladimir A. and Andričević, Pavao and Pavlović, Vera P. and Horvath, Endre and Forro, Laszlo and Vlahović, Branislav and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2022",
abstract = "The aim of this study was to investigate the influence of the deposition of vanadium oxide epitaxial layer on the photoresponse of TiO2/CH3NH3PbI3 heterojunction. TiO2 nanotube array was synthesized via anodization of titanium foil at three different voltages. After annealing at 450 °C, vanadium oxide was deposited by direct deposition from vanadyl(IV) sulfate solution. Microstructure analysis has been used for the investigation of the influence of different voltages of anodization on tube diameter. Spectroscopy measurements pointed out the red shift in diffusion reflectance spectra after deposition of vanadium oxide. The presence of V5+ oxidation state has been detected on the surface of nanotube arrays by chemical analysis. CH3NH3PbI3 monocrystal was dry pressed on top of the nanotubes in order to make a photodiode. The current-voltage characteristics of the photodiode were recorded and it was observed that the sample with the smallest wall thickness and higher amount of vanadium has the best photocurrent response.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts / Serbian Ceramic Society Conference - Advanced Ceramics and Application X, New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.",
title = "Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4226"
}

Vujančević, J., Blagojević, V. A., Andričević, P., Pavlović, V. P., Horvath, E., Forro, L., Vlahović, B., Pavlović, V. B.,& Janaćković, Đ.. (2022). Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3. in Program and the Book of Abstracts / Serbian Ceramic Society Conference - Advanced Ceramics and Application X, New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
Belgrade : Serbian Ceramic Society..
https://hdl.handle.net/21.15107/rcub_machinery_4226

Vujančević J, Blagojević VA, Andričević P, Pavlović VP, Horvath E, Forro L, Vlahović B, Pavlović VB, Janaćković Đ. Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3. in Program and the Book of Abstracts / Serbian Ceramic Society Conference - Advanced Ceramics and Application X, New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4226 .

Vujančević, Jelena, Blagojević, Vladimir A., Andričević, Pavao, Pavlović, Vera P., Horvath, Endre, Forro, Laszlo, Vlahović, Branislav, Pavlović, Vladimir B., Janaćković, Đorđe, "Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3" in Program and the Book of Abstracts / Serbian Ceramic Society Conference - Advanced Ceramics and Application X, New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022. (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4226 .

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Kosanović, Darko
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Tadić, Nenad
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4201
AB  - In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation of SrTiO3 powders was used to modify the functional properties of ceramic materials. Microstructural SEM analysis of SrTiO3 ceramics showed that the increase in mechanical activation time results in less porous samples. Raman spectroscopy indicated changes in the broadening and asymmetry of the TO2 mode with a change in the time of mechanical activation. TO2 mode showed a Fano asymmetry due to its interaction with polarization fluctuations in polar micro-regions, which are a consequence of the presence of oxygen vacancies caused by activation. The maximum value of dielectric permittivity was observed in the sample activated for 10 min. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
PB  - ETRAN
T2  - Science of Sintering
T1  - Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics
EP  - 414
IS  - 4
SP  - 401
VL  - 54
DO  - 10.2298/SOS2204401Z
ER  - 

@article{
author = "Živojinović, Jelena and Kosanović, Darko and Blagojević, Vladimir A. and Pavlović, Vera P. and Tadić, Nenad and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2022",
abstract = "In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation of SrTiO3 powders was used to modify the functional properties of ceramic materials. Microstructural SEM analysis of SrTiO3 ceramics showed that the increase in mechanical activation time results in less porous samples. Raman spectroscopy indicated changes in the broadening and asymmetry of the TO2 mode with a change in the time of mechanical activation. TO2 mode showed a Fano asymmetry due to its interaction with polarization fluctuations in polar micro-regions, which are a consequence of the presence of oxygen vacancies caused by activation. The maximum value of dielectric permittivity was observed in the sample activated for 10 min. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics",
pages = "414-401",
number = "4",
volume = "54",
doi = "10.2298/SOS2204401Z"
}

Živojinović, J., Kosanović, D., Blagojević, V. A., Pavlović, V. P., Tadić, N., Vlahović, B.,& Pavlović, V. B.. (2022). Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics. in Science of Sintering
ETRAN., 54(4), 401-414.
https://doi.org/10.2298/SOS2204401Z

Živojinović J, Kosanović D, Blagojević VA, Pavlović VP, Tadić N, Vlahović B, Pavlović VB. Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics. in Science of Sintering. 2022;54(4):401-414.
doi:10.2298/SOS2204401Z .

Živojinović, Jelena, Kosanović, Darko, Blagojević, Vladimir A., Pavlović, Vera P., Tadić, Nenad, Vlahović, Branislav, Pavlović, Vladimir B., "Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics" in Science of Sintering, 54, no. 4 (2022):401-414,
https://doi.org/10.2298/SOS2204401Z . .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Ilić, Jelena
AU  - Vasić Milovanović, Aleksandra
AU  - Jovanović, Jasmina
AU  - Trifković, Zoran
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5576
PB  - Mašinski fakultet u Beogradu
T2  - Mašinski fakultet u Beogradu
T1  - Praktikum laboratorijskih vežbi iz Fizike i merenja
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5576
ER  - 

@article{
author = "Pavlović, Vera P. and Ilić, Jelena and Vasić Milovanović, Aleksandra and Jovanović, Jasmina and Trifković, Zoran",
year = "2022",
publisher = "Mašinski fakultet u Beogradu",
journal = "Mašinski fakultet u Beogradu",
title = "Praktikum laboratorijskih vežbi iz Fizike i merenja",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5576"
}

Pavlović, V. P., Ilić, J., Vasić Milovanović, A., Jovanović, J.,& Trifković, Z.. (2022). Praktikum laboratorijskih vežbi iz Fizike i merenja. in Mašinski fakultet u Beogradu
Mašinski fakultet u Beogradu..
https://hdl.handle.net/21.15107/rcub_machinery_5576

Pavlović VP, Ilić J, Vasić Milovanović A, Jovanović J, Trifković Z. Praktikum laboratorijskih vežbi iz Fizike i merenja. in Mašinski fakultet u Beogradu. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_5576 .

Pavlović, Vera P., Ilić, Jelena, Vasić Milovanović, Aleksandra, Jovanović, Jasmina, Trifković, Zoran, "Praktikum laboratorijskih vežbi iz Fizike i merenja" in Mašinski fakultet u Beogradu (2022),
https://hdl.handle.net/21.15107/rcub_machinery_5576 .

TY  - JOUR
AU  - Ivanović, Marija
AU  - Nenadović, Snežana S.
AU  - Pavlović, Vera P.
AU  - Radović, Ivona
AU  - Kijevčanin, Mirjana
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3566
AB  - Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 degrees C for the process of geopolymerization. Mixtures of Na2SiO3 and NaOH of different molar concentrations ( from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentration also shows the highest values of all thermodynamic parameters. Metakaolin, obtained by calcination of kaolin at 750 degrees C, was used as the starting material. The samples were characterized by X-ray diffraction (XRD), FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentrations of activators do not notably change the Si/Al ratio.
PB  - Soc Chemists Technologists Madeconia, Skopje
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers
EP  - 117
IS  - 1
SP  - 107
VL  - 40
DO  - 10.20450/mjcce.2021.2127
ER  - 

@article{
author = "Ivanović, Marija and Nenadović, Snežana S. and Pavlović, Vera P. and Radović, Ivona and Kijevčanin, Mirjana and Pavlović, Vladimir B. and Kljajević, Ljiljana",
year = "2021",
abstract = "Thermodynamic parameters (densities, viscosities, speed of sound, and refractive index) of four series of alkaline activators were determined over the temperature range from 15 to 60 degrees C for the process of geopolymerization. Mixtures of Na2SiO3 and NaOH of different molar concentrations ( from 2M to 8M with step 2) were used as an alkaline activator. The sample with the highest NaOH concentration also shows the highest values of all thermodynamic parameters. Metakaolin, obtained by calcination of kaolin at 750 degrees C, was used as the starting material. The samples were characterized by X-ray diffraction (XRD), FTIR and Raman spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process, the changes in the phonon spectrum were confirmed. The different concentrations of activators do not notably change the Si/Al ratio.",
publisher = "Soc Chemists Technologists Madeconia, Skopje",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers",
pages = "117-107",
number = "1",
volume = "40",
doi = "10.20450/mjcce.2021.2127"
}

Ivanović, M., Nenadović, S. S., Pavlović, V. P., Radović, I., Kijevčanin, M., Pavlović, V. B.,& Kljajević, L.. (2021). The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering
Soc Chemists Technologists Madeconia, Skopje., 40(1), 107-117.
https://doi.org/10.20450/mjcce.2021.2127

Ivanović M, Nenadović SS, Pavlović VP, Radović I, Kijevčanin M, Pavlović VB, Kljajević L. The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers. in Macedonian Journal of Chemistry and Chemical Engineering. 2021;40(1):107-117.
doi:10.20450/mjcce.2021.2127 .

Ivanović, Marija, Nenadović, Snežana S., Pavlović, Vera P., Radović, Ivona, Kijevčanin, Mirjana, Pavlović, Vladimir B., Kljajević, Ljiljana, "The influence of thermodynamic parameters on alkaline activators of geopolymers and the structure of geopolymers" in Macedonian Journal of Chemistry and Chemical Engineering, 40, no. 1 (2021):107-117,
https://doi.org/10.20450/mjcce.2021.2127 . .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Blagojević, Vladimir A.
AU  - Andričević, Pavao
AU  - Pavlović, Vera P.
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4223
AB  - The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.
PB  - Faculty of Technology, University of Novi Sad
C3  - Programme and Book of Abstracts of the ECerS 14th Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, Serbia
T1  - Photoactivity of vanadium oxide TiO2 nanotubes
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4223
ER  - 

@conference{
author = "Vujančević, Jelena and Blagojević, Vladimir A. and Andričević, Pavao and Pavlović, Vera P. and Horvath, Endre and Forro, Laszlo and Vlahović, Branislav and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2021",
abstract = "The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.",
publisher = "Faculty of Technology, University of Novi Sad",
journal = "Programme and Book of Abstracts of the ECerS 14th Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, Serbia",
title = "Photoactivity of vanadium oxide TiO2 nanotubes",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4223"
}

Vujančević, J., Blagojević, V. A., Andričević, P., Pavlović, V. P., Horvath, E., Forro, L., Vlahović, B., Pavlović, V. B.,& Janaćković, Đ.. (2021). Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and Book of Abstracts of the ECerS 14th Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, Serbia
Faculty of Technology, University of Novi Sad..
https://hdl.handle.net/21.15107/rcub_machinery_4223

Vujančević J, Blagojević VA, Andričević P, Pavlović VP, Horvath E, Forro L, Vlahović B, Pavlović VB, Janaćković Đ. Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and Book of Abstracts of the ECerS 14th Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, Serbia. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4223 .

Vujančević, Jelena, Blagojević, Vladimir A., Andričević, Pavao, Pavlović, Vera P., Horvath, Endre, Forro, Laszlo, Vlahović, Branislav, Pavlović, Vladimir B., Janaćković, Đorđe, "Photoactivity of vanadium oxide TiO2 nanotubes" in Programme and Book of Abstracts of the ECerS 14th Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad, Serbia (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4223 .

TY  - CONF
AU  - Živojinović, Jelena
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Kosanović, Darko
AU  - Tadić, Nenad
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4224
AB  - In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz - 3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade
C3  - Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia
T1  - The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4224
ER  - 

@conference{
author = "Živojinović, Jelena and Blagojević, Vladimir A. and Pavlović, Vera P. and Kosanović, Darko and Tadić, Nenad and Pavlović, Vladimir B.",
year = "2021",
abstract = "In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz - 3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade",
journal = "Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia",
title = "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4224"
}

Živojinović, J., Blagojević, V. A., Pavlović, V. P., Kosanović, D., Tadić, N.,& Pavlović, V. B.. (2021). The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia
Innovation Center of Faculty of Mechanical Engineering, Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_4224

Živojinović J, Blagojević VA, Pavlović VP, Kosanović D, Tadić N, Pavlović VB. The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4224 .

Živojinović, Jelena, Blagojević, Vladimir A., Pavlović, Vera P., Kosanović, Darko, Tadić, Nenad, Pavlović, Vladimir B., "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics" in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4224 .

TY  - JOUR
AU  - Dojčinović, Milena 
AU  - Vasiljević, Zorka Ž.
AU  - Pavlović, Vera P.
AU  - Barišić, Dario
AU  - Pajić, Damir
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4068
AB  - CoxMg1-xFe2O4 (where x was 0.0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1) spinel ferrites were synthesized by the sol-gel combustion method using citric acid as fuel, following the rules of propellant chemistry. Amorphous powders were then calcined at 700 degrees C for 3 h. Structural analysis by X-Ray diffraction (XRD), FTIR and Raman spectroscopy confirmed the formation of a cubic spinel structure where the cation distribution and inversion degree depended on the Co2+ and Mg2+ ion content. Accordingly, the lattice parameter varied between 8.3703 angstrom (MgFe2O4) and 8.3919 A (Co-0.9 Mg0.1Fe2O4) as did the crystallite size, from 34 nm (Co0.1Mg0.9Fe2O4) to 48 nm (Co0.9Mg0.1Fe2O4). Scanning electron microscopy (SEM) showed the formation of multigrain agglomerates. Determined values of the maximal and remanent magnetization, as well as coercive field, depended on the Co2+ and Mg2+ ion content and increased with substitution of diamagnetic Mg2+ ions with magnetic Co2+ ions. Most impressive is the increase of the coercive field from 74 Oe for MgFe2O4 to 1000 Oe for CoFe2O4, as well as an increase of magnetization in the field of 10 kOe from 27.4 emu g(-1) to 75.7 emu g(-1). The determined optical band gaps from UV/Vis DRS measurements showed a strong dependence on cation content, morphology, and crystallite size, decreasing from 2.09 eV for MgFe2O4 to 1.42 eV for CoFe2O4. The photocatalytic efficiency of as-synthesized ferrites was investigated by monitoring photocatalytic degradation of Methylene Blue (MB) under natural sunlight, and artificial light source emitting visible light. Different conditions of MB degradation such as photocatalyst loading, molar concentration of MB, and pH values were investigated. Results have shown that under both visible light and natural sunlight, excessive amounts of cobalt retarded the photocatalytic process. Co0.9Mg0.1Fe2O4 showed considerable activity (74.5% after 4 h) that is unexpected but possibly connected to structural anomalies. The best photocatalytic activity under natural sunlight was achieved by MgFe204 (82% after 4 h), while the best photocatalytic activity under visible light was achieved by Co0.1Mg0.9Fe2O4 (79% after 4 h).
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties
IS  - 1
SP  - 157429
VL  - 855
DO  - 10.1016/j.jallcom.2020.157429
ER  - 

@article{
author = "Dojčinović, Milena  and Vasiljević, Zorka Ž. and Pavlović, Vera P. and Barišić, Dario and Pajić, Damir and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2021",
abstract = "CoxMg1-xFe2O4 (where x was 0.0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1) spinel ferrites were synthesized by the sol-gel combustion method using citric acid as fuel, following the rules of propellant chemistry. Amorphous powders were then calcined at 700 degrees C for 3 h. Structural analysis by X-Ray diffraction (XRD), FTIR and Raman spectroscopy confirmed the formation of a cubic spinel structure where the cation distribution and inversion degree depended on the Co2+ and Mg2+ ion content. Accordingly, the lattice parameter varied between 8.3703 angstrom (MgFe2O4) and 8.3919 A (Co-0.9 Mg0.1Fe2O4) as did the crystallite size, from 34 nm (Co0.1Mg0.9Fe2O4) to 48 nm (Co0.9Mg0.1Fe2O4). Scanning electron microscopy (SEM) showed the formation of multigrain agglomerates. Determined values of the maximal and remanent magnetization, as well as coercive field, depended on the Co2+ and Mg2+ ion content and increased with substitution of diamagnetic Mg2+ ions with magnetic Co2+ ions. Most impressive is the increase of the coercive field from 74 Oe for MgFe2O4 to 1000 Oe for CoFe2O4, as well as an increase of magnetization in the field of 10 kOe from 27.4 emu g(-1) to 75.7 emu g(-1). The determined optical band gaps from UV/Vis DRS measurements showed a strong dependence on cation content, morphology, and crystallite size, decreasing from 2.09 eV for MgFe2O4 to 1.42 eV for CoFe2O4. The photocatalytic efficiency of as-synthesized ferrites was investigated by monitoring photocatalytic degradation of Methylene Blue (MB) under natural sunlight, and artificial light source emitting visible light. Different conditions of MB degradation such as photocatalyst loading, molar concentration of MB, and pH values were investigated. Results have shown that under both visible light and natural sunlight, excessive amounts of cobalt retarded the photocatalytic process. Co0.9Mg0.1Fe2O4 showed considerable activity (74.5% after 4 h) that is unexpected but possibly connected to structural anomalies. The best photocatalytic activity under natural sunlight was achieved by MgFe204 (82% after 4 h), while the best photocatalytic activity under visible light was achieved by Co0.1Mg0.9Fe2O4 (79% after 4 h).",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties",
number = "1",
pages = "157429",
volume = "855",
doi = "10.1016/j.jallcom.2020.157429"
}

Dojčinović, M., Vasiljević, Z. Ž., Pavlović, V. P., Barišić, D., Pajić, D., Tadić, N. B.,& Nikolić, M. V.. (2021). Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties. in Journal of Alloys and Compounds
Elsevier., 855(1), 157429.
https://doi.org/10.1016/j.jallcom.2020.157429

Dojčinović M, Vasiljević ZŽ, Pavlović VP, Barišić D, Pajić D, Tadić NB, Nikolić MV. Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties. in Journal of Alloys and Compounds. 2021;855(1):157429.
doi:10.1016/j.jallcom.2020.157429 .

Dojčinović, Milena , Vasiljević, Zorka Ž., Pavlović, Vera P., Barišić, Dario, Pajić, Damir, Tadić, Nenad B., Nikolić, Maria Vesna, "Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties" in Journal of Alloys and Compounds, 855, no. 1 (2021):157429,
https://doi.org/10.1016/j.jallcom.2020.157429 . .

TY  - JOUR
AU  - Dojčinović, Milena 
AU  - Vasiljević, Zorka Ž.
AU  - Pavlović, Vera P.
AU  - Barišić, Dario
AU  - Pajić, Damir
AU  - Tadić, Nenad B.
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3604
AB  - CoxMg1-xFe2O4 (where x was 0.0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1) spinel ferrites were synthesized by the sol-gel combustion method using citric acid as fuel, following the rules of propellant chemistry. Amorphous powders were then calcined at 700 degrees C for 3 h. Structural analysis by X-Ray diffraction (XRD), FTIR and Raman spectroscopy confirmed the formation of a cubic spinel structure where the cation distribution and inversion degree depended on the Co2+ and Mg2+ ion content. Accordingly, the lattice parameter varied between 8.3703 angstrom (MgFe2O4) and 8.3919 A (Co-0.9 Mg0.1Fe2O4) as did the crystallite size, from 34 nm (Co0.1Mg0.9Fe2O4) to 48 nm (Co0.9Mg0.1Fe2O4). Scanning electron microscopy (SEM) showed the formation of multigrain agglomerates. Determined values of the maximal and remanent magnetization, as well as coercive field, depended on the Co2+ and Mg2+ ion content and increased with substitution of diamagnetic Mg2+ ions with magnetic Co2+ ions. Most impressive is the increase of the coercive field from 74 Oe for MgFe2O4 to 1000 Oe for CoFe2O4, as well as an increase of magnetization in the field of 10 kOe from 27.4 emu g(-1) to 75.7 emu g(-1). The determined optical band gaps from UV/Vis DRS measurements showed a strong dependence on cation content, morphology, and crystallite size, decreasing from 2.09 eV for MgFe2O4 to 1.42 eV for CoFe2O4. The photocatalytic efficiency of as-synthesized ferrites was investigated by monitoring photocatalytic degradation of Methylene Blue (MB) under natural sunlight, and artificial light source emitting visible light. Different conditions of MB degradation such as photocatalyst loading, molar concentration of MB, and pH values were investigated. Results have shown that under both visible light and natural sunlight, excessive amounts of cobalt retarded the photocatalytic process. Co0.9Mg0.1Fe2O4 showed considerable activity (74.5% after 4 h) that is unexpected but possibly connected to structural anomalies. The best photocatalytic activity under natural sunlight was achieved by MgFe204 (82% after 4 h), while the best photocatalytic activity under visible light was achieved by Co0.1Mg0.9Fe2O4 (79% after 4 h).
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties
VL  - 855
DO  - 10.1016/j.jallcom.2020.157429
ER  - 

@article{
author = "Dojčinović, Milena  and Vasiljević, Zorka Ž. and Pavlović, Vera P. and Barišić, Dario and Pajić, Damir and Tadić, Nenad B. and Nikolić, Maria Vesna",
year = "2021",
abstract = "CoxMg1-xFe2O4 (where x was 0.0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1) spinel ferrites were synthesized by the sol-gel combustion method using citric acid as fuel, following the rules of propellant chemistry. Amorphous powders were then calcined at 700 degrees C for 3 h. Structural analysis by X-Ray diffraction (XRD), FTIR and Raman spectroscopy confirmed the formation of a cubic spinel structure where the cation distribution and inversion degree depended on the Co2+ and Mg2+ ion content. Accordingly, the lattice parameter varied between 8.3703 angstrom (MgFe2O4) and 8.3919 A (Co-0.9 Mg0.1Fe2O4) as did the crystallite size, from 34 nm (Co0.1Mg0.9Fe2O4) to 48 nm (Co0.9Mg0.1Fe2O4). Scanning electron microscopy (SEM) showed the formation of multigrain agglomerates. Determined values of the maximal and remanent magnetization, as well as coercive field, depended on the Co2+ and Mg2+ ion content and increased with substitution of diamagnetic Mg2+ ions with magnetic Co2+ ions. Most impressive is the increase of the coercive field from 74 Oe for MgFe2O4 to 1000 Oe for CoFe2O4, as well as an increase of magnetization in the field of 10 kOe from 27.4 emu g(-1) to 75.7 emu g(-1). The determined optical band gaps from UV/Vis DRS measurements showed a strong dependence on cation content, morphology, and crystallite size, decreasing from 2.09 eV for MgFe2O4 to 1.42 eV for CoFe2O4. The photocatalytic efficiency of as-synthesized ferrites was investigated by monitoring photocatalytic degradation of Methylene Blue (MB) under natural sunlight, and artificial light source emitting visible light. Different conditions of MB degradation such as photocatalyst loading, molar concentration of MB, and pH values were investigated. Results have shown that under both visible light and natural sunlight, excessive amounts of cobalt retarded the photocatalytic process. Co0.9Mg0.1Fe2O4 showed considerable activity (74.5% after 4 h) that is unexpected but possibly connected to structural anomalies. The best photocatalytic activity under natural sunlight was achieved by MgFe204 (82% after 4 h), while the best photocatalytic activity under visible light was achieved by Co0.1Mg0.9Fe2O4 (79% after 4 h).",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties",
volume = "855",
doi = "10.1016/j.jallcom.2020.157429"
}

Dojčinović, M., Vasiljević, Z. Ž., Pavlović, V. P., Barišić, D., Pajić, D., Tadić, N. B.,& Nikolić, M. V.. (2021). Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 855.
https://doi.org/10.1016/j.jallcom.2020.157429

Dojčinović M, Vasiljević ZŽ, Pavlović VP, Barišić D, Pajić D, Tadić NB, Nikolić MV. Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties. in Journal of Alloys and Compounds. 2021;855.
doi:10.1016/j.jallcom.2020.157429 .

Dojčinović, Milena , Vasiljević, Zorka Ž., Pavlović, Vera P., Barišić, Dario, Pajić, Damir, Tadić, Nenad B., Nikolić, Maria Vesna, "Mixed Mg-Co spinel ferrites: Structure, morphology, magnetic and photocatalytic properties" in Journal of Alloys and Compounds, 855 (2021),
https://doi.org/10.1016/j.jallcom.2020.157429 . .

TY  - BOOK
AU  - Pavlović, Vera P.
AU  - Ilić, Jelena
AU  - Jovanović, Jasmina
AU  - Vasić Milovanović, Aleksandra
AU  - Trifković, Zoran
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5118
PB  - Mašinski fakultet Univerziteta u Beogradu
T2  - Mašinski fakultet Univerziteta u Beogradu
T1  - PREDAVANJA IZ FIZIKE
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5118
ER  - 

@book{
author = "Pavlović, Vera P. and Ilić, Jelena and Jovanović, Jasmina and Vasić Milovanović, Aleksandra and Trifković, Zoran",
year = "2021",
publisher = "Mašinski fakultet Univerziteta u Beogradu",
journal = "Mašinski fakultet Univerziteta u Beogradu",
title = "PREDAVANJA IZ FIZIKE",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5118"
}

Pavlović, V. P., Ilić, J., Jovanović, J., Vasić Milovanović, A.,& Trifković, Z.. (2021). PREDAVANJA IZ FIZIKE. in Mašinski fakultet Univerziteta u Beogradu
Mašinski fakultet Univerziteta u Beogradu..
https://hdl.handle.net/21.15107/rcub_machinery_5118

Pavlović VP, Ilić J, Jovanović J, Vasić Milovanović A, Trifković Z. PREDAVANJA IZ FIZIKE. in Mašinski fakultet Univerziteta u Beogradu. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_5118 .

Pavlović, Vera P., Ilić, Jelena, Jovanović, Jasmina, Vasić Milovanović, Aleksandra, Trifković, Zoran, "PREDAVANJA IZ FIZIKE" in Mašinski fakultet Univerziteta u Beogradu (2021),
https://hdl.handle.net/21.15107/rcub_machinery_5118 .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Tošić, Dragana
AU  - Dojčilović, Radovan
AU  - Dudić, Duško
AU  - Dramićanin, Miroslav
AU  - Medić, Mina
AU  - McPherson, Michael M.
AU  - Pavlović, Vladimir B.
AU  - Vlahović, Branislav
AU  - Djoković, Vladimir
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3600
AB  - Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar beta- and gamma-crystals, while there is also a contribution of the non-polar a-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of similar to 2 kHz, the observed process appears at similar to 10 degrees C (about 45 degrees above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from -100 to 100 degrees C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and similar to 50 kHz.
PB  - Elsevier Sci Ltd, Oxford
T2  - Polymer Testing
T1  - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
VL  - 96
DO  - 10.1016/j.polymertesting.2021.107093
ER  - 

@article{
author = "Pavlović, Vera P. and Tošić, Dragana and Dojčilović, Radovan and Dudić, Duško and Dramićanin, Miroslav and Medić, Mina and McPherson, Michael M. and Pavlović, Vladimir B. and Vlahović, Branislav and Djoković, Vladimir",
year = "2021",
abstract = "Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar beta- and gamma-crystals, while there is also a contribution of the non-polar a-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of similar to 2 kHz, the observed process appears at similar to 10 degrees C (about 45 degrees above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from -100 to 100 degrees C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and similar to 50 kHz.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Polymer Testing",
title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix",
volume = "96",
doi = "10.1016/j.polymertesting.2021.107093"
}

Pavlović, V. P., Tošić, D., Dojčilović, R., Dudić, D., Dramićanin, M., Medić, M., McPherson, M. M., Pavlović, V. B., Vlahović, B.,& Djoković, V.. (2021). PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing
Elsevier Sci Ltd, Oxford., 96.
https://doi.org/10.1016/j.polymertesting.2021.107093

Pavlović VP, Tošić D, Dojčilović R, Dudić D, Dramićanin M, Medić M, McPherson MM, Pavlović VB, Vlahović B, Djoković V. PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing. 2021;96.
doi:10.1016/j.polymertesting.2021.107093 .

Pavlović, Vera P., Tošić, Dragana, Dojčilović, Radovan, Dudić, Duško, Dramićanin, Miroslav, Medić, Mina, McPherson, Michael M., Pavlović, Vladimir B., Vlahović, Branislav, Djoković, Vladimir, "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix" in Polymer Testing, 96 (2021),
https://doi.org/10.1016/j.polymertesting.2021.107093 . .

TY  - JOUR
AU  - Pavlović, Vladimir B.
AU  - Vujančević, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vera P.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3369
AB  - Taking into account the importance of development of the advanced nanomaterials for the environmental protection, in this article the application of TiO2 based nanomaterials and nanostructures in the fields of renewable energy, chemical and bio decontamination has been presented. The role of TiO2 in formation of composite hybrid structures for solar energy harvesting has been explained, as well as the use photocatalytic degradation of pollutants. properties of TiO2 nanotubes obtained by decontamination.
AB  - Imajući u vidu značaj razvoja naprednih nanomaterijala za zaštitu prirodne okoline, u ovome radu su prezentovane primene nanomaterijala i nanostruktura na bazi TiO2 u oblastima obnovljivih izvora energije, hemijske i bio dekontaminacije. Objašnjena je uloga TiO2 u formiranju kompozitnih hibridnih struktura za prikupljanje solarne energije, kao i primena različitih antimikrobnih materijala na bazi TiO2 koji se koriste za fotokatalitičko uklanjanje polutanata. Naročita pažnja je posvećena strukturi i svojstvima titan dioksidnih nanotuba dobijenih primenom metode elektrohemijske anodizacije i njihova primena u bio dekontaminaciji.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - TiO2 based nanomaterials and nanostructures for green convergent technologies and environmental protection
T1  - Nanomaterijali i nanostrukture na bazi TiO2 za zelene konvergentne tehnologije i zaštitu prirodne okoline
EP  - 355
IS  - 4
SP  - 346
VL  - 61
DO  - 10.5937/zasmat2004346P
ER  - 

@article{
author = "Pavlović, Vladimir B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vera P.",
year = "2020",
abstract = "Taking into account the importance of development of the advanced nanomaterials for the environmental protection, in this article the application of TiO2 based nanomaterials and nanostructures in the fields of renewable energy, chemical and bio decontamination has been presented. The role of TiO2 in formation of composite hybrid structures for solar energy harvesting has been explained, as well as the use photocatalytic degradation of pollutants. properties of TiO2 nanotubes obtained by decontamination., Imajući u vidu značaj razvoja naprednih nanomaterijala za zaštitu prirodne okoline, u ovome radu su prezentovane primene nanomaterijala i nanostruktura na bazi TiO2 u oblastima obnovljivih izvora energije, hemijske i bio dekontaminacije. Objašnjena je uloga TiO2 u formiranju kompozitnih hibridnih struktura za prikupljanje solarne energije, kao i primena različitih antimikrobnih materijala na bazi TiO2 koji se koriste za fotokatalitičko uklanjanje polutanata. Naročita pažnja je posvećena strukturi i svojstvima titan dioksidnih nanotuba dobijenih primenom metode elektrohemijske anodizacije i njihova primena u bio dekontaminaciji.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "TiO2 based nanomaterials and nanostructures for green convergent technologies and environmental protection, Nanomaterijali i nanostrukture na bazi TiO2 za zelene konvergentne tehnologije i zaštitu prirodne okoline",
pages = "355-346",
number = "4",
volume = "61",
doi = "10.5937/zasmat2004346P"
}

Pavlović, V. B., Vujančević, J., Vlahović, B.,& Pavlović, V. P.. (2020). TiO2 based nanomaterials and nanostructures for green convergent technologies and environmental protection. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 61(4), 346-355.
https://doi.org/10.5937/zasmat2004346P

Pavlović VB, Vujančević J, Vlahović B, Pavlović VP. TiO2 based nanomaterials and nanostructures for green convergent technologies and environmental protection. in Zaštita materijala. 2020;61(4):346-355.
doi:10.5937/zasmat2004346P .

Pavlović, Vladimir B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vera P., "TiO2 based nanomaterials and nanostructures for green convergent technologies and environmental protection" in Zaštita materijala, 61, no. 4 (2020):346-355,
https://doi.org/10.5937/zasmat2004346P . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša J.
AU  - Pavlović, Vera P.
AU  - Marković, Smilja
AU  - Luković, Miloljub D.
AU  - Tadić, Nenad B.
AU  - Vujančević, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3373
AB  - Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.
PB  - Springer, Dordrecht
T2  - Journal of Electroceramics
T1  - Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance
EP  - 147
IS  - 4
SP  - 135
VL  - 45
DO  - 10.1007/s10832-021-00232-z
ER  - 

@article{
author = "Nikolić, Maria Vesna and Labus, Nebojša J. and Pavlović, Vera P. and Marković, Smilja and Luković, Miloljub D. and Tadić, Nenad B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2020",
abstract = "Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30-90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 degrees C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 degrees C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process.",
publisher = "Springer, Dordrecht",
journal = "Journal of Electroceramics",
title = "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance",
pages = "147-135",
number = "4",
volume = "45",
doi = "10.1007/s10832-021-00232-z"
}

Nikolić, M. V., Labus, N. J., Pavlović, V. P., Marković, S., Luković, M. D., Tadić, N. B., Vujančević, J., Vlahović, B.,& Pavlović, V. B.. (2020). Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics
Springer, Dordrecht., 45(4), 135-147.
https://doi.org/10.1007/s10832-021-00232-z

Nikolić MV, Labus NJ, Pavlović VP, Marković S, Luković MD, Tadić NB, Vujančević J, Vlahović B, Pavlović VB. Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics. 2020;45(4):135-147.
doi:10.1007/s10832-021-00232-z .

Nikolić, Maria Vesna, Labus, Nebojša J., Pavlović, Vera P., Marković, Smilja, Luković, Miloljub D., Tadić, Nenad B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vladimir B., "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance" in Journal of Electroceramics, 45, no. 4 (2020):135-147,
https://doi.org/10.1007/s10832-021-00232-z . .

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 . .