TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Stojadinović, Stevan
AU  - Ilić, Mila
AU  - Došen, Ognjen
AU  - Stefanov, Plamen
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4943
AB  - Spray pyrolysis was used to deposit CeO2–TiO2 coatings on stainless steel substrates. The addition of CeO2 to TiO2 changes morphology of the coatings, causing the surface to become laced and some CeO2 ions are incorporated into TiO2 crystal lattice. Part of CeO2 is highly dispersed on the surface of TiO2. The XPS showed the simultaneous existence of Ce4+ and Ce3+ on coating surface. As the CeO2 content in composites increases from 0.5 to 20%, the band gap decreases from 3.16 to 2.88 eV, respectively. The photoactivities in the degradation of methyl orange and lindane were significantly influenced by the content of Ce in composite. For methyl orange photodegradation, the highest activity had coating with CeO2 content of 2 wt%. In contrast, the activity of coatings in lindane photodegradation gradually decreases as the CeO2 content increases. However, efficiency of CeO2–TiO2 coatings remained satisfactory for application in process of lindane degradation. Lindane conversion at 6 h of irradiation is in the range from 88% for pure TiO2 to 60% for CeO2–TiO2 coating with CeO2 content of 20 wt%. Photodegradation of lindane was enhanced on pure TiO2 sites, while methyl orange degradation is highest on composite CeO2/TiO2 species with CeO2 content of 2 wt%.
PB  - Switzerland: Springer Nature
T2  - Journal of Materials Science: Materials in Electronics
T1  - TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye
VL  - 33
SP  - 5073
EP  - 5086
DO  - 10.1007/s10854-022-07698-9
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Stojadinović, Stevan and Ilić, Mila and Došen, Ognjen and Stefanov, Plamen",
year = "2022",
abstract = "Spray pyrolysis was used to deposit CeO2–TiO2 coatings on stainless steel substrates. The addition of CeO2 to TiO2 changes morphology of the coatings, causing the surface to become laced and some CeO2 ions are incorporated into TiO2 crystal lattice. Part of CeO2 is highly dispersed on the surface of TiO2. The XPS showed the simultaneous existence of Ce4+ and Ce3+ on coating surface. As the CeO2 content in composites increases from 0.5 to 20%, the band gap decreases from 3.16 to 2.88 eV, respectively. The photoactivities in the degradation of methyl orange and lindane were significantly influenced by the content of Ce in composite. For methyl orange photodegradation, the highest activity had coating with CeO2 content of 2 wt%. In contrast, the activity of coatings in lindane photodegradation gradually decreases as the CeO2 content increases. However, efficiency of CeO2–TiO2 coatings remained satisfactory for application in process of lindane degradation. Lindane conversion at 6 h of irradiation is in the range from 88% for pure TiO2 to 60% for CeO2–TiO2 coating with CeO2 content of 20 wt%. Photodegradation of lindane was enhanced on pure TiO2 sites, while methyl orange degradation is highest on composite CeO2/TiO2 species with CeO2 content of 2 wt%.",
publisher = "Switzerland: Springer Nature",
journal = "Journal of Materials Science: Materials in Electronics",
title = "TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye",
volume = "33",
pages = "5073-5086",
doi = "10.1007/s10854-022-07698-9"
}

Radić, N., Grbić, B., Stojadinović, S., Ilić, M., Došen, O.,& Stefanov, P.. (2022). TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye. in Journal of Materials Science: Materials in Electronics
Switzerland: Springer Nature., 33, 5073-5086.
https://doi.org/10.1007/s10854-022-07698-9

Radić N, Grbić B, Stojadinović S, Ilić M, Došen O, Stefanov P. TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye. in Journal of Materials Science: Materials in Electronics. 2022;33:5073-5086.
doi:10.1007/s10854-022-07698-9 .

Radić, Nenad, Grbić, Boško, Stojadinović, Stevan, Ilić, Mila, Došen, Ognjen, Stefanov, Plamen, "TiO2–CeO2 composite coatings for photocatalytic degradation of chloropesticide and organic dye" in Journal of Materials Science: Materials in Electronics, 33 (2022):5073-5086,
https://doi.org/10.1007/s10854-022-07698-9 . .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Cherkezova-Zheleva, Zara
AU  - Stojadinović, Stevan
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5688
AB  - The LaTi0.4Mg0.4Fe0.2O3 perovskite was synthesized using a mechanochemical process followed by high-temperature annealing at 600 and 800 ​°C. The effects of milling time and annealing temperature on structural, microstructural changes and optical properties were examined. The photocatalytic activity of LaTi0.4Mg0.4Fe0.2O3 perovskite was evaluated through the photodegradation of methyl orange and methylene blue dyes under UV light irradiation. The results showed that the annealing temperature performed an important role in the crystallite size, crystalline degree, photoluminescence, and band gaps of the LaTi0.4Mg0.4Fe0.2O3 samples. The temperature of annealing had a profound influence on the photocatalytic activities of the LaTi0.4Mg0.4Fe0.2O3 perovskite in the single and binary dye system. The highest photocatalytic activity for methyl orange degradation showed the LaTi0.4Mg0.4Fe0.2O3 annealed at 800 ​°C, while not annealed sample, show the highest activity for degradation of methylene blue. The maximum efficiency of methylene blue photodegradation in individual and binary mixtures was observed over non-annealed perovskite at the same irradiation times. The photodegradation of methylene blue and methyl orange on the LaTi0.4Mg0.4Fe0.2O3 followed a pseudo-first-order kinetic process.
PB  - Elsevier
T2  - Journal of Solid State Chemistry
T1  - Structural, optical and photocatalytic properties of LaTi0.4Mg0.4Fe0.2O3 perovskite prepared by high-energy ball milling
VL  - 297
SP  - 122085
DO  - 10.1016/j.jssc.2021.122085
ER  - 

@article{
author = "Petrović, Srđan and Rožić, Ljiljana and Grbić, Boško and Radić, Nenad and Cherkezova-Zheleva, Zara and Stojadinović, Stevan",
year = "2021",
abstract = "The LaTi0.4Mg0.4Fe0.2O3 perovskite was synthesized using a mechanochemical process followed by high-temperature annealing at 600 and 800 ​°C. The effects of milling time and annealing temperature on structural, microstructural changes and optical properties were examined. The photocatalytic activity of LaTi0.4Mg0.4Fe0.2O3 perovskite was evaluated through the photodegradation of methyl orange and methylene blue dyes under UV light irradiation. The results showed that the annealing temperature performed an important role in the crystallite size, crystalline degree, photoluminescence, and band gaps of the LaTi0.4Mg0.4Fe0.2O3 samples. The temperature of annealing had a profound influence on the photocatalytic activities of the LaTi0.4Mg0.4Fe0.2O3 perovskite in the single and binary dye system. The highest photocatalytic activity for methyl orange degradation showed the LaTi0.4Mg0.4Fe0.2O3 annealed at 800 ​°C, while not annealed sample, show the highest activity for degradation of methylene blue. The maximum efficiency of methylene blue photodegradation in individual and binary mixtures was observed over non-annealed perovskite at the same irradiation times. The photodegradation of methylene blue and methyl orange on the LaTi0.4Mg0.4Fe0.2O3 followed a pseudo-first-order kinetic process.",
publisher = "Elsevier",
journal = "Journal of Solid State Chemistry",
title = "Structural, optical and photocatalytic properties of LaTi0.4Mg0.4Fe0.2O3 perovskite prepared by high-energy ball milling",
volume = "297",
pages = "122085",
doi = "10.1016/j.jssc.2021.122085"
}

Petrović, S., Rožić, L., Grbić, B., Radić, N., Cherkezova-Zheleva, Z.,& Stojadinović, S.. (2021). Structural, optical and photocatalytic properties of LaTi0.4Mg0.4Fe0.2O3 perovskite prepared by high-energy ball milling. in Journal of Solid State Chemistry
Elsevier., 297, 122085.
https://doi.org/10.1016/j.jssc.2021.122085

Petrović S, Rožić L, Grbić B, Radić N, Cherkezova-Zheleva Z, Stojadinović S. Structural, optical and photocatalytic properties of LaTi0.4Mg0.4Fe0.2O3 perovskite prepared by high-energy ball milling. in Journal of Solid State Chemistry. 2021;297:122085.
doi:10.1016/j.jssc.2021.122085 .

Petrović, Srđan, Rožić, Ljiljana, Grbić, Boško, Radić, Nenad, Cherkezova-Zheleva, Zara, Stojadinović, Stevan, "Structural, optical and photocatalytic properties of LaTi0.4Mg0.4Fe0.2O3 perovskite prepared by high-energy ball milling" in Journal of Solid State Chemistry, 297 (2021):122085,
https://doi.org/10.1016/j.jssc.2021.122085 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Tadić, Nenad
AU  - Vasilić, Rastko
AU  - Grbić, Boško
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3761
AB  - This paper presents a new method for improvement of ultraviolet light driven photocatalytic activity of ZnO by immobilizing ZnO particles into Al2O3:Ce3+ coatings which emit intense radiation in the near ultraviolet region when excited by middle ultraviolet radiation. When Al2O3:Ce3+/ZnO coatings are illuminated by ultraviolet light in photocatalytic reactor, emitted ultraviolet radiation originating from Ce3+ ions synergistically participates in photocatalytic reactions on ZnO. Al2O3:Ce3+/ZnO coatings were formed by plasma electrolytic oxidation of
aluminum in electrolyte containing 2 g/L of ZnO particles and up to 8 g/L of CeO2 particles. Structural, optical, photoluminescent, and photocatalytic properties of formed surface coatings were examined. All formed coatings feature virtually the same thickness, morphology, phase composition, and absorption properties. Concentration of incorporated Ce3+ ions into Al2O3 host and concentration of immobilized ZnO particles are the only parameters by which the coatings differ from each other resulting in difference in photocatalytic activity. Al2O3:Ce3+/ZnO coatings show better photodegradation of methyl orange with respect to Al2O3/ZnO coatings. The best photocatalytic activity is observed for the coating formed in electrolyte containing 4 g/L of CeO2 particles.
PB  - Elsevier
T2  - Optical Materials
T1  - Enhanced ultraviolet light driven photocatalytic activity of ZnO particles incorporated by plasma electrolytic oxidation into Al2O3 coatings co-doped with Ce3+
VL  - 101
SP  - 109768
DO  - 10.1016/j.optmat.2020.109768
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Tadić, Nenad and Vasilić, Rastko and Grbić, Boško",
year = "2020",
abstract = "This paper presents a new method for improvement of ultraviolet light driven photocatalytic activity of ZnO by immobilizing ZnO particles into Al2O3:Ce3+ coatings which emit intense radiation in the near ultraviolet region when excited by middle ultraviolet radiation. When Al2O3:Ce3+/ZnO coatings are illuminated by ultraviolet light in photocatalytic reactor, emitted ultraviolet radiation originating from Ce3+ ions synergistically participates in photocatalytic reactions on ZnO. Al2O3:Ce3+/ZnO coatings were formed by plasma electrolytic oxidation of
aluminum in electrolyte containing 2 g/L of ZnO particles and up to 8 g/L of CeO2 particles. Structural, optical, photoluminescent, and photocatalytic properties of formed surface coatings were examined. All formed coatings feature virtually the same thickness, morphology, phase composition, and absorption properties. Concentration of incorporated Ce3+ ions into Al2O3 host and concentration of immobilized ZnO particles are the only parameters by which the coatings differ from each other resulting in difference in photocatalytic activity. Al2O3:Ce3+/ZnO coatings show better photodegradation of methyl orange with respect to Al2O3/ZnO coatings. The best photocatalytic activity is observed for the coating formed in electrolyte containing 4 g/L of CeO2 particles.",
publisher = "Elsevier",
journal = "Optical Materials",
title = "Enhanced ultraviolet light driven photocatalytic activity of ZnO particles incorporated by plasma electrolytic oxidation into Al2O3 coatings co-doped with Ce3+",
volume = "101",
pages = "109768",
doi = "10.1016/j.optmat.2020.109768"
}

Stojadinović, S., Radić, N., Tadić, N., Vasilić, R.,& Grbić, B.. (2020). Enhanced ultraviolet light driven photocatalytic activity of ZnO particles incorporated by plasma electrolytic oxidation into Al2O3 coatings co-doped with Ce3+. in Optical Materials
Elsevier., 101, 109768.
https://doi.org/10.1016/j.optmat.2020.109768

Stojadinović S, Radić N, Tadić N, Vasilić R, Grbić B. Enhanced ultraviolet light driven photocatalytic activity of ZnO particles incorporated by plasma electrolytic oxidation into Al2O3 coatings co-doped with Ce3+. in Optical Materials. 2020;101:109768.
doi:10.1016/j.optmat.2020.109768 .

Stojadinović, Stevan, Radić, Nenad, Tadić, Nenad, Vasilić, Rastko, Grbić, Boško, "Enhanced ultraviolet light driven photocatalytic activity of ZnO particles incorporated by plasma electrolytic oxidation into Al2O3 coatings co-doped with Ce3+" in Optical Materials, 101 (2020):109768,
https://doi.org/10.1016/j.optmat.2020.109768 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Petrović, Srđan
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Stefanov, Plamen
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3782
AB  - The spray pyrolysis is fast and simple method for deposition of CeO2 – rutile TiO2 coatings on stainless steel substrate. The coatings were deposited on stainless steel substrate and characterized by XRD, AFM, XPS, Raman, DRS and photoactivity test for methyl orange decolorization. Photoactivity of CeO2 – rutile TiO2 coatings increase with increasing CeO2 content up to 5 wt% and further increase of CeO2 content leads to decrease of photoactivity. Improvements of photoactivity originate from close contact between CeO2 and rutile TiO2 particles which create numerous centers able to produce very reactive radical species. Besides, the close contact between the CeO2 and rutile TiO2 provides easier charge transfer facilitating the formation of electron/hole pairs that is a necessary step in the overall photocatalytic process.
PB  - Elsevier
T2  - Physica B: Physics of Condensed Matter
T1  - Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis
VL  - 599
SP  - 412544
DO  - 10.1016/j.physb.2020.412544
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Petrović, Srđan and Stojadinović, Stevan and Tadić, Nenad and Stefanov, Plamen",
year = "2020",
abstract = "The spray pyrolysis is fast and simple method for deposition of CeO2 – rutile TiO2 coatings on stainless steel substrate. The coatings were deposited on stainless steel substrate and characterized by XRD, AFM, XPS, Raman, DRS and photoactivity test for methyl orange decolorization. Photoactivity of CeO2 – rutile TiO2 coatings increase with increasing CeO2 content up to 5 wt% and further increase of CeO2 content leads to decrease of photoactivity. Improvements of photoactivity originate from close contact between CeO2 and rutile TiO2 particles which create numerous centers able to produce very reactive radical species. Besides, the close contact between the CeO2 and rutile TiO2 provides easier charge transfer facilitating the formation of electron/hole pairs that is a necessary step in the overall photocatalytic process.",
publisher = "Elsevier",
journal = "Physica B: Physics of Condensed Matter",
title = "Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis",
volume = "599",
pages = "412544",
doi = "10.1016/j.physb.2020.412544"
}

Radić, N., Grbić, B., Petrović, S., Stojadinović, S., Tadić, N.,& Stefanov, P.. (2020). Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis. in Physica B: Physics of Condensed Matter
Elsevier., 599, 412544.
https://doi.org/10.1016/j.physb.2020.412544

Radić N, Grbić B, Petrović S, Stojadinović S, Tadić N, Stefanov P. Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis. in Physica B: Physics of Condensed Matter. 2020;599:412544.
doi:10.1016/j.physb.2020.412544 .

Radić, Nenad, Grbić, Boško, Petrović, Srđan, Stojadinović, Stevan, Tadić, Nenad, Stefanov, Plamen, "Effect of cerium oxide doping on the photocatalytic properties of rutile TiO2 films prepared by spray pyrolysis" in Physica B: Physics of Condensed Matter, 599 (2020):412544,
https://doi.org/10.1016/j.physb.2020.412544 . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Petrović, Srđan
AU  - Lončarević, Davor
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Stojadinović, Stevan
AU  - Jović, Vesna
AU  - Lamovec, Jelena
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2486
AB  - TiO2-CeO2 nanopowders were synthesised by a ball-milling process and then annealed at temperatures from 500 degrees to 800 degrees C. X-ray diffraction and diffuse reflectance spectra were used in combination with temperature programmed desorption to determine the structural and microstructural changes of nanopowders as a the function of annealing temperature. The results of the X-ray analysis showed that the weight fraction of the cerianite phase remained unchanged with a temperature rise of 600-700 degrees C, indicating that the phase changes occur only within TiO2. The TiO2-CeO2 nanopowder showed enhanced optical properties with a red shift after the thermal treatment. Photocatalytic studies revealed that the sample annealed at 600 degrees C showed higher photocatalytic activity than samples annealed at lower or higher temperatures in the degradation of the methyl orange. The activity test of all samples is in accordance with photoluminescence measurements, proportional to the concentrations of hydroxyl radicals at the photocatalyst surfaces.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders
VL  - 45
IS  - 2
SP  - 2361
EP  - 2367
DO  - 10.1016/j.ceramint.2018.10.153
ER  - 

@article{
author = "Rožić, Ljiljana and Petrović, Srđan and Lončarević, Davor and Grbić, Boško and Radić, Nenad and Stojadinović, Stevan and Jović, Vesna and Lamovec, Jelena",
year = "2019",
abstract = "TiO2-CeO2 nanopowders were synthesised by a ball-milling process and then annealed at temperatures from 500 degrees to 800 degrees C. X-ray diffraction and diffuse reflectance spectra were used in combination with temperature programmed desorption to determine the structural and microstructural changes of nanopowders as a the function of annealing temperature. The results of the X-ray analysis showed that the weight fraction of the cerianite phase remained unchanged with a temperature rise of 600-700 degrees C, indicating that the phase changes occur only within TiO2. The TiO2-CeO2 nanopowder showed enhanced optical properties with a red shift after the thermal treatment. Photocatalytic studies revealed that the sample annealed at 600 degrees C showed higher photocatalytic activity than samples annealed at lower or higher temperatures in the degradation of the methyl orange. The activity test of all samples is in accordance with photoluminescence measurements, proportional to the concentrations of hydroxyl radicals at the photocatalyst surfaces.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders",
volume = "45",
number = "2",
pages = "2361-2367",
doi = "10.1016/j.ceramint.2018.10.153"
}

Rožić, L., Petrović, S., Lončarević, D., Grbić, B., Radić, N., Stojadinović, S., Jović, V.,& Lamovec, J.. (2019). Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(2), 2361-2367.
https://doi.org/10.1016/j.ceramint.2018.10.153

Rožić L, Petrović S, Lončarević D, Grbić B, Radić N, Stojadinović S, Jović V, Lamovec J. Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders. in Ceramics International. 2019;45(2):2361-2367.
doi:10.1016/j.ceramint.2018.10.153 .

Rožić, Ljiljana, Petrović, Srđan, Lončarević, Davor, Grbić, Boško, Radić, Nenad, Stojadinović, Stevan, Jović, Vesna, Lamovec, Jelena, "Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders" in Ceramics International, 45, no. 2 (2019):2361-2367,
https://doi.org/10.1016/j.ceramint.2018.10.153 . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Petrović, Srđan
AU  - Lončarević, Davor
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Stojadinović, Stevan
AU  - Jović, Vesna
AU  - Lamovec, Jelena
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2900
AB  - TiO2-CeO2 nanopowders were synthesised by a ball-milling process and then annealed at temperatures from 500 degrees to 800 degrees C. X-ray diffraction and diffuse reflectance spectra were used in combination with temperature programmed desorption to determine the structural and microstructural changes of nanopowders as a the function of annealing temperature. The results of the X-ray analysis showed that the weight fraction of the cerianite phase remained unchanged with a temperature rise of 600-700 degrees C, indicating that the phase changes occur only within TiO2. The TiO2-CeO2 nanopowder showed enhanced optical properties with a red shift after the thermal treatment. Photocatalytic studies revealed that the sample annealed at 600 degrees C showed higher photocatalytic activity than samples annealed at lower or higher temperatures in the degradation of the methyl orange. The activity test of all samples is in accordance with photoluminescence measurements, proportional to the concentrations of hydroxyl radicals at the photocatalyst surfaces.
PB  - Oxford : Elsevier Sci Ltd.
T2  - Ceramics International
T1  - Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders
VL  - 45
IS  - 2
SP  - 2361
EP  - 2367
DO  - 10.1016/j.ceramint.2018.10.153
ER  - 

@article{
author = "Rožić, Ljiljana and Petrović, Srđan and Lončarević, Davor and Grbić, Boško and Radić, Nenad and Stojadinović, Stevan and Jović, Vesna and Lamovec, Jelena",
year = "2019",
abstract = "TiO2-CeO2 nanopowders were synthesised by a ball-milling process and then annealed at temperatures from 500 degrees to 800 degrees C. X-ray diffraction and diffuse reflectance spectra were used in combination with temperature programmed desorption to determine the structural and microstructural changes of nanopowders as a the function of annealing temperature. The results of the X-ray analysis showed that the weight fraction of the cerianite phase remained unchanged with a temperature rise of 600-700 degrees C, indicating that the phase changes occur only within TiO2. The TiO2-CeO2 nanopowder showed enhanced optical properties with a red shift after the thermal treatment. Photocatalytic studies revealed that the sample annealed at 600 degrees C showed higher photocatalytic activity than samples annealed at lower or higher temperatures in the degradation of the methyl orange. The activity test of all samples is in accordance with photoluminescence measurements, proportional to the concentrations of hydroxyl radicals at the photocatalyst surfaces.",
publisher = "Oxford : Elsevier Sci Ltd.",
journal = "Ceramics International",
title = "Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders",
volume = "45",
number = "2",
pages = "2361-2367",
doi = "10.1016/j.ceramint.2018.10.153"
}

Rožić, L., Petrović, S., Lončarević, D., Grbić, B., Radić, N., Stojadinović, S., Jović, V.,& Lamovec, J.. (2019). Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders. in Ceramics International
Oxford : Elsevier Sci Ltd.., 45(2), 2361-2367.
https://doi.org/10.1016/j.ceramint.2018.10.153

Rožić L, Petrović S, Lončarević D, Grbić B, Radić N, Stojadinović S, Jović V, Lamovec J. Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders. in Ceramics International. 2019;45(2):2361-2367.
doi:10.1016/j.ceramint.2018.10.153 .

Rožić, Ljiljana, Petrović, Srđan, Lončarević, Davor, Grbić, Boško, Radić, Nenad, Stojadinović, Stevan, Jović, Vesna, Lamovec, Jelena, "Influence of annealing temperature on structural, optical and photocatalytic properties of TiO2-CeO2 nanopowders" in Ceramics International, 45, no. 2 (2019):2361-2367,
https://doi.org/10.1016/j.ceramint.2018.10.153 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2292
AB  - Tb doped TiO2 coatings are formed by plasma electrolytic oxidation (PEO) of titanium in water solution of 10 g/L Na3PO4.12H(2)O with addition of Tb4O7 powder. Surface morphology, chemical, and phase composition of obtained PEO coatings are investigated utilizing scanning electron microscopy equipped with energy dispersive x-ray spectroscopy and X-ray diffraction. Uniformly distributed Ti, O, P, and Tb are identified as the main constituents of the coatings. Diffraction patterns of obtained coatings show well pronounced reflections inherent to anatase phase of TiO2. Performed photoluminescence measurements indicate that incorporated Tb is in trivalent oxidation state. Photoluminescence emission spectra feature two overlapping regions: the first region is related to band of TiO2 host and the second region which features several emission bands is ascribed to f-f transitions of Tb3+ from excited level D-5(4) to lower levels F-7(J) (J = 3,4,5, and 6). The photocatalytic activity (PA) of Tb3+ doped TiO2 coatings is probed by measuring the photodegradation of methyl orange under simulated sunlight conditions, suggesting that the main factor affecting PA is concentration of Tb3+ ions incorporated into coatings. Tb3+ doped TiO2 coatings formed for short time have better PA than pure TiO2 coatings formed under the same conditions; the highest PA is observed for the coating formed after 1 min of PEO process. Presence of Tb3+ ions into TiO2 coatings in small concentration improves PA through effective suppression of electron/hole recombination.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - Effect of Tb3+ doping on the photocatalytic activity of TiO2 coatings formed by plasma electrolytic oxidation of titanium
VL  - 337
SP  - 279
EP  - 289
DO  - 10.1016/j.surfcoat.2018.01.033
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2018",
abstract = "Tb doped TiO2 coatings are formed by plasma electrolytic oxidation (PEO) of titanium in water solution of 10 g/L Na3PO4.12H(2)O with addition of Tb4O7 powder. Surface morphology, chemical, and phase composition of obtained PEO coatings are investigated utilizing scanning electron microscopy equipped with energy dispersive x-ray spectroscopy and X-ray diffraction. Uniformly distributed Ti, O, P, and Tb are identified as the main constituents of the coatings. Diffraction patterns of obtained coatings show well pronounced reflections inherent to anatase phase of TiO2. Performed photoluminescence measurements indicate that incorporated Tb is in trivalent oxidation state. Photoluminescence emission spectra feature two overlapping regions: the first region is related to band of TiO2 host and the second region which features several emission bands is ascribed to f-f transitions of Tb3+ from excited level D-5(4) to lower levels F-7(J) (J = 3,4,5, and 6). The photocatalytic activity (PA) of Tb3+ doped TiO2 coatings is probed by measuring the photodegradation of methyl orange under simulated sunlight conditions, suggesting that the main factor affecting PA is concentration of Tb3+ ions incorporated into coatings. Tb3+ doped TiO2 coatings formed for short time have better PA than pure TiO2 coatings formed under the same conditions; the highest PA is observed for the coating formed after 1 min of PEO process. Presence of Tb3+ ions into TiO2 coatings in small concentration improves PA through effective suppression of electron/hole recombination.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "Effect of Tb3+ doping on the photocatalytic activity of TiO2 coatings formed by plasma electrolytic oxidation of titanium",
volume = "337",
pages = "279-289",
doi = "10.1016/j.surfcoat.2018.01.033"
}

Stojadinović, S., Tadić, N., Radić, N., Grbić, B.,& Vasilić, R.. (2018). Effect of Tb3+ doping on the photocatalytic activity of TiO2 coatings formed by plasma electrolytic oxidation of titanium. in Surface and Coatings Technology
Elsevier., 337, 279-289.
https://doi.org/10.1016/j.surfcoat.2018.01.033

Stojadinović S, Tadić N, Radić N, Grbić B, Vasilić R. Effect of Tb3+ doping on the photocatalytic activity of TiO2 coatings formed by plasma electrolytic oxidation of titanium. in Surface and Coatings Technology. 2018;337:279-289.
doi:10.1016/j.surfcoat.2018.01.033 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "Effect of Tb3+ doping on the photocatalytic activity of TiO2 coatings formed by plasma electrolytic oxidation of titanium" in Surface and Coatings Technology, 337 (2018):279-289,
https://doi.org/10.1016/j.surfcoat.2018.01.033 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Tadić, Nenad
AU  - Vasilić, Rastko
AU  - Stefanov, Plamen
AU  - Grbić, Boško
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2307
AB  - This paper presents the results of our recent investigation focused on the preparation and possible photocatalytic application of iron doped TiO2 coatings formed by plasma electrolytic oxidation of high purity titanium in electrolyte containing FeSO4. The morphology, phase and elemental composition, and absorption band of the coatings were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The photocatalytic activity of coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was found that the addition of iron precursor to electrolyte solution improves the photocatalytic properties of obtained coatings with respect to pure TiO2 coating. The incorporation of iron in TiO2 lattice was identified as the main factor affecting the increase of photocatalytic activity. The highest photocatalytic activity was observed when coatings were processed for 2 min with addition of 1 g/L FeSO4 to electrolyte.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation
VL  - 29
IS  - 11
SP  - 9427
EP  - 9434
DO  - 10.1007/s10854-018-8975-6
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Tadić, Nenad and Vasilić, Rastko and Stefanov, Plamen and Grbić, Boško",
year = "2018",
abstract = "This paper presents the results of our recent investigation focused on the preparation and possible photocatalytic application of iron doped TiO2 coatings formed by plasma electrolytic oxidation of high purity titanium in electrolyte containing FeSO4. The morphology, phase and elemental composition, and absorption band of the coatings were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The photocatalytic activity of coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was found that the addition of iron precursor to electrolyte solution improves the photocatalytic properties of obtained coatings with respect to pure TiO2 coating. The incorporation of iron in TiO2 lattice was identified as the main factor affecting the increase of photocatalytic activity. The highest photocatalytic activity was observed when coatings were processed for 2 min with addition of 1 g/L FeSO4 to electrolyte.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation",
volume = "29",
number = "11",
pages = "9427-9434",
doi = "10.1007/s10854-018-8975-6"
}

Stojadinović, S., Radić, N., Tadić, N., Vasilić, R., Stefanov, P.,& Grbić, B.. (2018). Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 29(11), 9427-9434.
https://doi.org/10.1007/s10854-018-8975-6

Stojadinović S, Radić N, Tadić N, Vasilić R, Stefanov P, Grbić B. Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation. in Journal of Materials Science-Materials in Electronics. 2018;29(11):9427-9434.
doi:10.1007/s10854-018-8975-6 .

Stojadinović, Stevan, Radić, Nenad, Tadić, Nenad, Vasilić, Rastko, Stefanov, Plamen, Grbić, Boško, "Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation" in Journal of Materials Science-Materials in Electronics, 29, no. 11 (2018):9427-9434,
https://doi.org/10.1007/s10854-018-8975-6 . .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Stojadinović, Stevan
AU  - Grbić, Boško
AU  - Vasilić, Rastko
AU  - Vuković, Zorica
AU  - Radić, Nenad
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2349
AB  - In this study, WO3 doped TiO2 powders were synthesized via sol-gel method combined with a hydrothermal process. The effect of sintering temperature on mesoporous structure and catalytic activities of these powders were investigated. The physical analysis via X-ray diffraction indicates that prepared samples are a mixture of anatase and rutile TiO2 phases. X-ray peak analysis is used to evaluate the crystallite size and lattice strain by the Williamson-Hall analysis. Considering all the reflections of the anatase phase the lattice strain ranging from c = 9.505 to c = 9.548 is calculated, suggesting that microstrain decreases when calcination temperature increases. N-2 adsorption-desorption analysis shows that the surface area and pore volume decrease with increasing temperature and that WOx-TiO2 powders primarily consist of mesopores. Sintering temperature induced a change in textural properties causing a systematic shift towards larger mesopores. Simultaneously, photoactivity in decolorization of methyl orange increases with increasing calcination temperature up to 700 degrees C, followed by significant decrease with its further increase.
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - The Effect of Sintering Temperature on Mesoporous Structure of WO3 Doped Tio(2) Powders
VL  - 50
IS  - 1
SP  - 123
EP  - 132
DO  - 10.2298/SOS1801123P
ER  - 

@article{
author = "Petrović, Srđan and Rožić, Ljiljana and Stojadinović, Stevan and Grbić, Boško and Vasilić, Rastko and Vuković, Zorica and Radić, Nenad",
year = "2018",
abstract = "In this study, WO3 doped TiO2 powders were synthesized via sol-gel method combined with a hydrothermal process. The effect of sintering temperature on mesoporous structure and catalytic activities of these powders were investigated. The physical analysis via X-ray diffraction indicates that prepared samples are a mixture of anatase and rutile TiO2 phases. X-ray peak analysis is used to evaluate the crystallite size and lattice strain by the Williamson-Hall analysis. Considering all the reflections of the anatase phase the lattice strain ranging from c = 9.505 to c = 9.548 is calculated, suggesting that microstrain decreases when calcination temperature increases. N-2 adsorption-desorption analysis shows that the surface area and pore volume decrease with increasing temperature and that WOx-TiO2 powders primarily consist of mesopores. Sintering temperature induced a change in textural properties causing a systematic shift towards larger mesopores. Simultaneously, photoactivity in decolorization of methyl orange increases with increasing calcination temperature up to 700 degrees C, followed by significant decrease with its further increase.",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "The Effect of Sintering Temperature on Mesoporous Structure of WO3 Doped Tio(2) Powders",
volume = "50",
number = "1",
pages = "123-132",
doi = "10.2298/SOS1801123P"
}

Petrović, S., Rožić, L., Stojadinović, S., Grbić, B., Vasilić, R., Vuković, Z.,& Radić, N.. (2018). The Effect of Sintering Temperature on Mesoporous Structure of WO3 Doped Tio(2) Powders. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 50(1), 123-132.
https://doi.org/10.2298/SOS1801123P

Petrović S, Rožić L, Stojadinović S, Grbić B, Vasilić R, Vuković Z, Radić N. The Effect of Sintering Temperature on Mesoporous Structure of WO3 Doped Tio(2) Powders. in Science of Sintering. 2018;50(1):123-132.
doi:10.2298/SOS1801123P .

Petrović, Srđan, Rožić, Ljiljana, Stojadinović, Stevan, Grbić, Boško, Vasilić, Rastko, Vuković, Zorica, Radić, Nenad, "The Effect of Sintering Temperature on Mesoporous Structure of WO3 Doped Tio(2) Powders" in Science of Sintering, 50, no. 1 (2018):123-132,
https://doi.org/10.2298/SOS1801123P . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2445
AB  - CdS particles modified anatase TiO2 photocatalysts were formed on titanium substrate by plasma electrolytic oxidation for 2 min in supporting electrolyte (10 g/L Na-3 center dot PO4 center dot 12H(2)O) with addition of CdS particles in concentrations up to 8 g/L. Content of CdS particles incorporated into TiO2 coatings depends of CdS particles concentration in supporting electrolyte, while surface morphology, phase structure and absorption properties of formed coatings were not significantly influenced by the addition of CdS particles. In contrast to pure TiO2 coatings, TiO2/CdS coatings exhibit enhanced photocatalytic activity (PA) in the degradation of methyl orange, used as a model organic pollutant, under simulated solar irradiation. The highest PA was observed for TiO2/CdS coating formed in supporting electrolyte with addition of 0.4 g/L of CdS particles. Photoluminescence measurements indicate that enhanced PA is related to the reduction of the recombination rate of photogenerated electron/hole pairs as a result of TiO2 and CdS coupling.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity
VL  - 344
SP  - 528
EP  - 533
DO  - 10.1016/j.surfcoat.2018.03.080
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2018",
abstract = "CdS particles modified anatase TiO2 photocatalysts were formed on titanium substrate by plasma electrolytic oxidation for 2 min in supporting electrolyte (10 g/L Na-3 center dot PO4 center dot 12H(2)O) with addition of CdS particles in concentrations up to 8 g/L. Content of CdS particles incorporated into TiO2 coatings depends of CdS particles concentration in supporting electrolyte, while surface morphology, phase structure and absorption properties of formed coatings were not significantly influenced by the addition of CdS particles. In contrast to pure TiO2 coatings, TiO2/CdS coatings exhibit enhanced photocatalytic activity (PA) in the degradation of methyl orange, used as a model organic pollutant, under simulated solar irradiation. The highest PA was observed for TiO2/CdS coating formed in supporting electrolyte with addition of 0.4 g/L of CdS particles. Photoluminescence measurements indicate that enhanced PA is related to the reduction of the recombination rate of photogenerated electron/hole pairs as a result of TiO2 and CdS coupling.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity",
volume = "344",
pages = "528-533",
doi = "10.1016/j.surfcoat.2018.03.080"
}

Stojadinović, S., Tadić, N., Radić, N., Grbić, B.,& Vasilić, R.. (2018). CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity. in Surface and Coatings Technology
Elsevier., 344, 528-533.
https://doi.org/10.1016/j.surfcoat.2018.03.080

Stojadinović S, Tadić N, Radić N, Grbić B, Vasilić R. CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity. in Surface and Coatings Technology. 2018;344:528-533.
doi:10.1016/j.surfcoat.2018.03.080 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity" in Surface and Coatings Technology, 344 (2018):528-533,
https://doi.org/10.1016/j.surfcoat.2018.03.080 . .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Jović, Vesna
AU  - Stojadinović, Stevan
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Lamovec, Jelena
AU  - Vasilić, Rastko
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2454
AB  - Nanocrystalline TiO2-CeO2 powders were synthesized from their TiO2 and CeO2 oxides using mechanical ball milling process. The response surface method is applied to identify optimal parameters for the synthesis of TiO2-CeO2 photocatalyst. Analysis of variance and main effect plot are used to determine the significant parameters and set the optimal level for each parameter. Regression analysis showed good agreement of experimental data with the second-order polynomial model with a coefficients of determination: R-2 = 0.991, R-Adj(2). = 0.940 and R-Pred(2). = 0.983. Under optimal experimental conditions of TiO2:CeO2 weight percentage ratio 71: 29, milling speed 200 rpm, and milling time 115 min the highest photodegradation efficiency was achieved. On the basis of the above statistical analysis, it was found that the band gap energy of TiO2-CeO2 nanoparticles decreases with the increase of the milling speed and milling time with constant TiO2:CeO2 weight percentage ratio. Obtained results suggest that mechanical ball milling process is a rapid, efficient and low energy consumption method to synthesize TiO2-CeO2 photocatalyst.
PB  - Elsevier
T2  - Advanced Powder Technology
T1  - Optimization of a nanoparticle ball milling process parameters using the response surface method
VL  - 29
IS  - 9
SP  - 2129
EP  - 2139
DO  - 10.1016/j.apt.2018.05.021
ER  - 

@article{
author = "Petrović, Srđan and Rožić, Ljiljana and Jović, Vesna and Stojadinović, Stevan and Grbić, Boško and Radić, Nenad and Lamovec, Jelena and Vasilić, Rastko",
year = "2018",
abstract = "Nanocrystalline TiO2-CeO2 powders were synthesized from their TiO2 and CeO2 oxides using mechanical ball milling process. The response surface method is applied to identify optimal parameters for the synthesis of TiO2-CeO2 photocatalyst. Analysis of variance and main effect plot are used to determine the significant parameters and set the optimal level for each parameter. Regression analysis showed good agreement of experimental data with the second-order polynomial model with a coefficients of determination: R-2 = 0.991, R-Adj(2). = 0.940 and R-Pred(2). = 0.983. Under optimal experimental conditions of TiO2:CeO2 weight percentage ratio 71: 29, milling speed 200 rpm, and milling time 115 min the highest photodegradation efficiency was achieved. On the basis of the above statistical analysis, it was found that the band gap energy of TiO2-CeO2 nanoparticles decreases with the increase of the milling speed and milling time with constant TiO2:CeO2 weight percentage ratio. Obtained results suggest that mechanical ball milling process is a rapid, efficient and low energy consumption method to synthesize TiO2-CeO2 photocatalyst.",
publisher = "Elsevier",
journal = "Advanced Powder Technology",
title = "Optimization of a nanoparticle ball milling process parameters using the response surface method",
volume = "29",
number = "9",
pages = "2129-2139",
doi = "10.1016/j.apt.2018.05.021"
}

Petrović, S., Rožić, L., Jović, V., Stojadinović, S., Grbić, B., Radić, N., Lamovec, J.,& Vasilić, R.. (2018). Optimization of a nanoparticle ball milling process parameters using the response surface method. in Advanced Powder Technology
Elsevier., 29(9), 2129-2139.
https://doi.org/10.1016/j.apt.2018.05.021

Petrović S, Rožić L, Jović V, Stojadinović S, Grbić B, Radić N, Lamovec J, Vasilić R. Optimization of a nanoparticle ball milling process parameters using the response surface method. in Advanced Powder Technology. 2018;29(9):2129-2139.
doi:10.1016/j.apt.2018.05.021 .

Petrović, Srđan, Rožić, Ljiljana, Jović, Vesna, Stojadinović, Stevan, Grbić, Boško, Radić, Nenad, Lamovec, Jelena, Vasilić, Rastko, "Optimization of a nanoparticle ball milling process parameters using the response surface method" in Advanced Powder Technology, 29, no. 9 (2018):2129-2139,
https://doi.org/10.1016/j.apt.2018.05.021 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4292
AB  - CdS particles modified anatase TiO2 photocatalysts were formed on titanium substrate by plasma electrolytic oxidation for 2 min in supporting electrolyte (10 g/L Na-3 center dot PO4 center dot 12H(2)O) with addition of CdS particles in concentrations up to 8 g/L. Content of CdS particles incorporated into TiO2 coatings depends of CdS particles concentration in supporting electrolyte, while surface morphology, phase structure and absorption properties of formed coatings were not significantly influenced by the addition of CdS particles. In contrast to pure TiO2 coatings, TiO2/CdS coatings exhibit enhanced photocatalytic activity (PA) in the degradation of methyl orange, used as a model organic pollutant, under simulated solar irradiation. The highest PA was observed for TiO2/CdS coating formed in supporting electrolyte with addition of 0.4 g/L of CdS particles. Photoluminescence measurements indicate that enhanced PA is related to the reduction of the recombination rate of photogenerated electron/hole pairs as a result of TiO2 and CdS coupling.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity
VL  - 344
SP  - 528
EP  - 533
DO  - 10.1016/j.surfcoat.2018.03.080
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2018",
abstract = "CdS particles modified anatase TiO2 photocatalysts were formed on titanium substrate by plasma electrolytic oxidation for 2 min in supporting electrolyte (10 g/L Na-3 center dot PO4 center dot 12H(2)O) with addition of CdS particles in concentrations up to 8 g/L. Content of CdS particles incorporated into TiO2 coatings depends of CdS particles concentration in supporting electrolyte, while surface morphology, phase structure and absorption properties of formed coatings were not significantly influenced by the addition of CdS particles. In contrast to pure TiO2 coatings, TiO2/CdS coatings exhibit enhanced photocatalytic activity (PA) in the degradation of methyl orange, used as a model organic pollutant, under simulated solar irradiation. The highest PA was observed for TiO2/CdS coating formed in supporting electrolyte with addition of 0.4 g/L of CdS particles. Photoluminescence measurements indicate that enhanced PA is related to the reduction of the recombination rate of photogenerated electron/hole pairs as a result of TiO2 and CdS coupling.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity",
volume = "344",
pages = "528-533",
doi = "10.1016/j.surfcoat.2018.03.080"
}

Stojadinović, S., Tadić, N., Radić, N., Grbić, B.,& Vasilić, R.. (2018). CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity. in Surface and Coatings Technology
Elsevier., 344, 528-533.
https://doi.org/10.1016/j.surfcoat.2018.03.080

Stojadinović S, Tadić N, Radić N, Grbić B, Vasilić R. CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity. in Surface and Coatings Technology. 2018;344:528-533.
doi:10.1016/j.surfcoat.2018.03.080 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "CdS particles modified TiO2 coatings formed by plasma electrolytic oxidation with enhanced photocatalytic activity" in Surface and Coatings Technology, 344 (2018):528-533,
https://doi.org/10.1016/j.surfcoat.2018.03.080 . .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Vuković, Zorica
AU  - Grbić, Boško
AU  - Radić, Nenad
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2078
AB  - This article presents the comparison of structural and fractal properties of nanocrystalline titanium dioxide (TiO2) and TiO2 modified with tungstophosphoric acid (TiO2/HPW) and their impact on the photocatalytic degradation of hazardous water pollutants. TiO2 and TiO2/HPW samples were synthesized by a combined solgel and hydrothermal processing. The XRD analysis of pure TiO2 samples revealed that phase composition was mainly dependent on the calcination temperature, changing from amorphous TiO2 to crystalline anatase and rutile by increasing the temperature. On the other hand, the XRD of TiO2/HPW samples calcined at temperatures above 600 degrees C showed crystalline peaks associated to formation of WO3 and WO2.92 crystalline domains. The N-2 adsorption-desorption isotherm and pore size distribution of TiO2/HPW samples detected the existence of mesoporous characteristic with very narrow bimodal pores in the mesoporous region. The structural heterogeneity of samples was analyzed by means of pore size distribution functions, while the variation in fractal dimension were determined from the nitrogen adsorption isotherms, using the modified Frenkel-Halsey-Hill method. The results demonstrate that the approach is capable of characterizing complex textures such as those present in the TiO2 and TiO2/HPW photocatalysts. Besides, the effect of calcinations condition on photocatalytic properties of the samples was also investigated. The highest efficiency with respect to methyl orange photodecomposition was observed for TiO2/HPW photocatalysts calcined at 700 degrees C.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Journal of Physics and Chemistry of Solids
T1  - Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst
VL  - 103
SP  - 95
EP  - 102
DO  - 10.1016/j.jpcs.2016.12.002
ER  - 

@article{
author = "Petrović, Srđan and Rožić, Ljiljana and Vuković, Zorica and Grbić, Boško and Radić, Nenad and Stojadinović, Stevan and Vasilić, Rastko",
year = "2017",
abstract = "This article presents the comparison of structural and fractal properties of nanocrystalline titanium dioxide (TiO2) and TiO2 modified with tungstophosphoric acid (TiO2/HPW) and their impact on the photocatalytic degradation of hazardous water pollutants. TiO2 and TiO2/HPW samples were synthesized by a combined solgel and hydrothermal processing. The XRD analysis of pure TiO2 samples revealed that phase composition was mainly dependent on the calcination temperature, changing from amorphous TiO2 to crystalline anatase and rutile by increasing the temperature. On the other hand, the XRD of TiO2/HPW samples calcined at temperatures above 600 degrees C showed crystalline peaks associated to formation of WO3 and WO2.92 crystalline domains. The N-2 adsorption-desorption isotherm and pore size distribution of TiO2/HPW samples detected the existence of mesoporous characteristic with very narrow bimodal pores in the mesoporous region. The structural heterogeneity of samples was analyzed by means of pore size distribution functions, while the variation in fractal dimension were determined from the nitrogen adsorption isotherms, using the modified Frenkel-Halsey-Hill method. The results demonstrate that the approach is capable of characterizing complex textures such as those present in the TiO2 and TiO2/HPW photocatalysts. Besides, the effect of calcinations condition on photocatalytic properties of the samples was also investigated. The highest efficiency with respect to methyl orange photodecomposition was observed for TiO2/HPW photocatalysts calcined at 700 degrees C.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Journal of Physics and Chemistry of Solids",
title = "Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst",
volume = "103",
pages = "95-102",
doi = "10.1016/j.jpcs.2016.12.002"
}

Petrović, S., Rožić, L., Vuković, Z., Grbić, B., Radić, N., Stojadinović, S.,& Vasilić, R.. (2017). Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst. in Journal of Physics and Chemistry of Solids
Oxford : Pergamon-Elsevier Science Ltd., 103, 95-102.
https://doi.org/10.1016/j.jpcs.2016.12.002

Petrović S, Rožić L, Vuković Z, Grbić B, Radić N, Stojadinović S, Vasilić R. Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst. in Journal of Physics and Chemistry of Solids. 2017;103:95-102.
doi:10.1016/j.jpcs.2016.12.002 .

Petrović, Srđan, Rožić, Ljiljana, Vuković, Zorica, Grbić, Boško, Radić, Nenad, Stojadinović, Stevan, Vasilić, Rastko, "Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst" in Journal of Physics and Chemistry of Solids, 103 (2017):95-102,
https://doi.org/10.1016/j.jpcs.2016.12.002 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2178
AB  - TiO2/SnO2 coatings are formed by plasma electrolytic oxidation of titanium substrate in supporting electrolyte (10 g/L Na3PO4 center dot 12H(2)O) with addition of various concentrations of SnO2 particles. Photocatalytic activity (PA) of TiO2/SnO2 coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was observed that PA of TiO2/SnO2 coatings strongly depends on the concentration of SnO2 particles in the electrolyte, i. e., the highest PA was observed with addition of 0.3 g/L of SnO2 particles to supporting electrolyte.
PB  - Elsevier
T2  - Materials Letters
T1  - TiO2/SnO2 photocatalyst formed by plasma electrolytic oxidation
VL  - 196
SP  - 292
EP  - 295
DO  - 10.1016/j.matlet.2017.03.115
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2017",
abstract = "TiO2/SnO2 coatings are formed by plasma electrolytic oxidation of titanium substrate in supporting electrolyte (10 g/L Na3PO4 center dot 12H(2)O) with addition of various concentrations of SnO2 particles. Photocatalytic activity (PA) of TiO2/SnO2 coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was observed that PA of TiO2/SnO2 coatings strongly depends on the concentration of SnO2 particles in the electrolyte, i. e., the highest PA was observed with addition of 0.3 g/L of SnO2 particles to supporting electrolyte.",
publisher = "Elsevier",
journal = "Materials Letters",
title = "TiO2/SnO2 photocatalyst formed by plasma electrolytic oxidation",
volume = "196",
pages = "292-295",
doi = "10.1016/j.matlet.2017.03.115"
}

Stojadinović, S., Tadić, N., Radić, N., Grbić, B.,& Vasilić, R.. (2017). TiO2/SnO2 photocatalyst formed by plasma electrolytic oxidation. in Materials Letters
Elsevier., 196, 292-295.
https://doi.org/10.1016/j.matlet.2017.03.115

Stojadinović S, Tadić N, Radić N, Grbić B, Vasilić R. TiO2/SnO2 photocatalyst formed by plasma electrolytic oxidation. in Materials Letters. 2017;196:292-295.
doi:10.1016/j.matlet.2017.03.115 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "TiO2/SnO2 photocatalyst formed by plasma electrolytic oxidation" in Materials Letters, 196 (2017):292-295,
https://doi.org/10.1016/j.matlet.2017.03.115 . .

TY  - JOUR
AU  - Cherneva, Sabina
AU  - Iankov, ROumen
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Datcheva, Maria
AU  - Stoychev, Dimitar
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2184
AB  - The aim of the present work is to determine the indentation hardness (HIT) and indentation modulus (EIT) of pure TiO2 and WO3 thin films, as well as thin films composed of different TiO2 and WO3 proportions and deposited by spray pyrolysis on a stainless-steel (OC 404) substrate. Since the HIT and EIT of the films are properties expected to depend on the phase-chemical composition, morphology, structure and their changes when increasing the WO3 content in the TiO2-WO3 composite film, the correlation between the mechanical and structural properties is also addressed. The obtained results show that HIT and EIT strongly depend on the concentration of the co-deposited WO3. The determined values of HIT and EIT noticeably decrease (in comparison with HIT and EIT of the pure (100 %) TiO2 layer) when very low concentrations of WO3 (up to 2.5 % of W) are co-deposited. At higher concentrations of the co-deposited WO3 (more than 2.5 % of W), the HIT and EIT values increase almost linearly with an increase of the WO3 in the precursor. The observed non-proportional behavior of HIT and EIT is associated with specific changes of the structure and a development of defects in the deposited TiO2-WO3 composite phase, as well as with the increase in the amount of the formed separate WO3 phase (with increasing of WO3 (H2W3O12) in the working solution) surrounded by solitary TiO2 particles.
PB  - Institute of Metals and Technology
T2  - Materiali in Tehnologije
T1  - Nano-indentation investigations of the mechanical properties of thin tio2, wo3 and their composites layers, deposited by spray pyrolysis
VL  - 51
IS  - 1
SP  - 75
EP  - 83
DO  - 10.17222/mit.2015.216
ER  - 

@article{
author = "Cherneva, Sabina and Iankov, ROumen and Radić, Nenad and Grbić, Boško and Datcheva, Maria and Stoychev, Dimitar",
year = "2017",
abstract = "The aim of the present work is to determine the indentation hardness (HIT) and indentation modulus (EIT) of pure TiO2 and WO3 thin films, as well as thin films composed of different TiO2 and WO3 proportions and deposited by spray pyrolysis on a stainless-steel (OC 404) substrate. Since the HIT and EIT of the films are properties expected to depend on the phase-chemical composition, morphology, structure and their changes when increasing the WO3 content in the TiO2-WO3 composite film, the correlation between the mechanical and structural properties is also addressed. The obtained results show that HIT and EIT strongly depend on the concentration of the co-deposited WO3. The determined values of HIT and EIT noticeably decrease (in comparison with HIT and EIT of the pure (100 %) TiO2 layer) when very low concentrations of WO3 (up to 2.5 % of W) are co-deposited. At higher concentrations of the co-deposited WO3 (more than 2.5 % of W), the HIT and EIT values increase almost linearly with an increase of the WO3 in the precursor. The observed non-proportional behavior of HIT and EIT is associated with specific changes of the structure and a development of defects in the deposited TiO2-WO3 composite phase, as well as with the increase in the amount of the formed separate WO3 phase (with increasing of WO3 (H2W3O12) in the working solution) surrounded by solitary TiO2 particles.",
publisher = "Institute of Metals and Technology",
journal = "Materiali in Tehnologije",
title = "Nano-indentation investigations of the mechanical properties of thin tio2, wo3 and their composites layers, deposited by spray pyrolysis",
volume = "51",
number = "1",
pages = "75-83",
doi = "10.17222/mit.2015.216"
}

Cherneva, S., Iankov, R., Radić, N., Grbić, B., Datcheva, M.,& Stoychev, D.. (2017). Nano-indentation investigations of the mechanical properties of thin tio2, wo3 and their composites layers, deposited by spray pyrolysis. in Materiali in Tehnologije
Institute of Metals and Technology., 51(1), 75-83.
https://doi.org/10.17222/mit.2015.216

Cherneva S, Iankov R, Radić N, Grbić B, Datcheva M, Stoychev D. Nano-indentation investigations of the mechanical properties of thin tio2, wo3 and their composites layers, deposited by spray pyrolysis. in Materiali in Tehnologije. 2017;51(1):75-83.
doi:10.17222/mit.2015.216 .

Cherneva, Sabina, Iankov, ROumen, Radić, Nenad, Grbić, Boško, Datcheva, Maria, Stoychev, Dimitar, "Nano-indentation investigations of the mechanical properties of thin tio2, wo3 and their composites layers, deposited by spray pyrolysis" in Materiali in Tehnologije, 51, no. 1 (2017):75-83,
https://doi.org/10.17222/mit.2015.216 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2198
AB  - This paper presents the results of our recent investigation of MgO/ZnO coatings formed on AZ31 magnesium alloy by plasma electrolytic oxidation in phosphate-based alkaline electrolyte with varying concentration of ZnO particles. Surface morphology of obtained coatings is not significantly influenced by the addition of ZnO particles to the supporting electrolyte, while processing time has considerable influence on the morphology of formed coatings. Elemental mapping showed that elements are distributed rather uniformly across the obtained oxide coatings. The content of Zn increases with ZnO particle concentration in the supporting electrolyte as well as with PEO processing time. Incorporation of ZnO particles in obtained coatings was confirmed by X-ray diffraction and Raman spectroscopy. Photoluminescent emission spectra of MgO/ZnO coatings featured sharp band centered at about 380 nm and broad band centered at about 535 nm, with the leading contribution coming from ZnO deposited on the surface. Diffuse reflectance spectra revealed that absorption edge of MgO/ZnO coatings is positioned at about 385 nm. Photoactivity of obtained coatings increases with processing time and ZnO concentration up to 6 g/L.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - MgO/ZnO coatings formed on magnesium alloy AZ31 by plasma electrolytic oxidation: Structural, photoluminescence and photocatalytic investigation
VL  - 310
SP  - 98
EP  - 105
DO  - 10.1016/j.surfcoat.2016.12.073
ER  - 

@article{
author = "Stojadinović, Stevan and Tadić, Nenad and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2017",
abstract = "This paper presents the results of our recent investigation of MgO/ZnO coatings formed on AZ31 magnesium alloy by plasma electrolytic oxidation in phosphate-based alkaline electrolyte with varying concentration of ZnO particles. Surface morphology of obtained coatings is not significantly influenced by the addition of ZnO particles to the supporting electrolyte, while processing time has considerable influence on the morphology of formed coatings. Elemental mapping showed that elements are distributed rather uniformly across the obtained oxide coatings. The content of Zn increases with ZnO particle concentration in the supporting electrolyte as well as with PEO processing time. Incorporation of ZnO particles in obtained coatings was confirmed by X-ray diffraction and Raman spectroscopy. Photoluminescent emission spectra of MgO/ZnO coatings featured sharp band centered at about 380 nm and broad band centered at about 535 nm, with the leading contribution coming from ZnO deposited on the surface. Diffuse reflectance spectra revealed that absorption edge of MgO/ZnO coatings is positioned at about 385 nm. Photoactivity of obtained coatings increases with processing time and ZnO concentration up to 6 g/L.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "MgO/ZnO coatings formed on magnesium alloy AZ31 by plasma electrolytic oxidation: Structural, photoluminescence and photocatalytic investigation",
volume = "310",
pages = "98-105",
doi = "10.1016/j.surfcoat.2016.12.073"
}

Stojadinović, S., Tadić, N., Radić, N., Grbić, B.,& Vasilić, R.. (2017). MgO/ZnO coatings formed on magnesium alloy AZ31 by plasma electrolytic oxidation: Structural, photoluminescence and photocatalytic investigation. in Surface and Coatings Technology
Elsevier., 310, 98-105.
https://doi.org/10.1016/j.surfcoat.2016.12.073

Stojadinović S, Tadić N, Radić N, Grbić B, Vasilić R. MgO/ZnO coatings formed on magnesium alloy AZ31 by plasma electrolytic oxidation: Structural, photoluminescence and photocatalytic investigation. in Surface and Coatings Technology. 2017;310:98-105.
doi:10.1016/j.surfcoat.2016.12.073 .

Stojadinović, Stevan, Tadić, Nenad, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "MgO/ZnO coatings formed on magnesium alloy AZ31 by plasma electrolytic oxidation: Structural, photoluminescence and photocatalytic investigation" in Surface and Coatings Technology, 310 (2017):98-105,
https://doi.org/10.1016/j.surfcoat.2016.12.073 . .

TY  - JOUR
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
AU  - Petrović, Srđan
AU  - Rožić, Ljiljana
AU  - Stefanov, Plamen
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2259
AB  - Pt-Ba-Al2O3 coatings were obtained by spray pyrolysis deposition on stainless steel foil. The XRD results showed that the coatings consisted from Ba carbonate and Pt (fcc) phases. SEM micrographs demonstrated that the coatings are smooth and compact. The XPS data confirmed that Ba and Pt are in close contact. Pt crystallite size is only slightly influenced by the order of Pt and Ba deposition and the dispersion of Pt is in the narrow range from 28 to 33% for all samples. Catalyst component deposition order affects NOx storage capacity. Simultaneous deposition of Ba and Pt on already formed Al2O3 substrate produces the most efficient catalyst. Pt deposited on top of the Ba layer results in slightly reduced NOx storage capacity, while deposition of Pt on the separated layer with Ba layer on top significantly reduces the ability for NOx storage.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis
VL  - 628
SP  - 7
EP  - 12
DO  - 10.1016/j.tsf.2017.03.007
ER  - 

@article{
author = "Radić, Nenad and Grbić, Boško and Stojadinović, Stevan and Vasilić, Rastko and Petrović, Srđan and Rožić, Ljiljana and Stefanov, Plamen",
year = "2017",
abstract = "Pt-Ba-Al2O3 coatings were obtained by spray pyrolysis deposition on stainless steel foil. The XRD results showed that the coatings consisted from Ba carbonate and Pt (fcc) phases. SEM micrographs demonstrated that the coatings are smooth and compact. The XPS data confirmed that Ba and Pt are in close contact. Pt crystallite size is only slightly influenced by the order of Pt and Ba deposition and the dispersion of Pt is in the narrow range from 28 to 33% for all samples. Catalyst component deposition order affects NOx storage capacity. Simultaneous deposition of Ba and Pt on already formed Al2O3 substrate produces the most efficient catalyst. Pt deposited on top of the Ba layer results in slightly reduced NOx storage capacity, while deposition of Pt on the separated layer with Ba layer on top significantly reduces the ability for NOx storage.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis",
volume = "628",
pages = "7-12",
doi = "10.1016/j.tsf.2017.03.007"
}

Radić, N., Grbić, B., Stojadinović, S., Vasilić, R., Petrović, S., Rožić, L.,& Stefanov, P.. (2017). Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis. in Thin Solid Films
Elsevier Science Sa, Lausanne., 628, 7-12.
https://doi.org/10.1016/j.tsf.2017.03.007

Radić N, Grbić B, Stojadinović S, Vasilić R, Petrović S, Rožić L, Stefanov P. Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis. in Thin Solid Films. 2017;628:7-12.
doi:10.1016/j.tsf.2017.03.007 .

Radić, Nenad, Grbić, Boško, Stojadinović, Stevan, Vasilić, Rastko, Petrović, Srđan, Rožić, Ljiljana, Stefanov, Plamen, "Preparation and characterization of Pt-Ba-Al2O3 coatings obtained by spray pyrolysis" in Thin Solid Films, 628 (2017):7-12,
https://doi.org/10.1016/j.tsf.2017.03.007 . .

TY  - JOUR
AU  - Tadić, Nenad
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1914
AB  - This paper presents a recent investigation of rapid deposition of TiO2 nanoparticles on aluminum by plasma electrolytic oxidation in Na2SiO3 center dot 5H(2)O water based electrolyte with addition of TiO2 nanoparticles and Na2WO4 center dot 2H(2)O. Oxide coatings were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and grazing incidence X-ray diffraction. It was found that surface morphology, chemical and phase compositions of obtained coatings depend on electrolyte composition and processing time. The photocatalytic activity was tested by photodegrading methyl orange under simulated sunlight conditions. It was observed that photodegradation of methyl orange strongly depends on the concentration of TiO2 nanoparticles and sodium tungstate in the electrolyte and PEO treatment time. Coatings with the highest photoactivity were obtained in 4 g/L Na2SiO3 center dot 5H(2)O + 2 g/L Degussa P25 + 0.1 g/L Na2WO4 center dot 2H(2)O.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - Characterization and photocatalytic properties of tungsten doped TiO2 coatings on aluminum obtained by plasma electrolytic oxidation
VL  - 305
SP  - 192
EP  - 199
DO  - 10.1016/j.surfcoat.2016.08.045
ER  - 

@article{
author = "Tadić, Nenad and Stojadinović, Stevan and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2016",
abstract = "This paper presents a recent investigation of rapid deposition of TiO2 nanoparticles on aluminum by plasma electrolytic oxidation in Na2SiO3 center dot 5H(2)O water based electrolyte with addition of TiO2 nanoparticles and Na2WO4 center dot 2H(2)O. Oxide coatings were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and grazing incidence X-ray diffraction. It was found that surface morphology, chemical and phase compositions of obtained coatings depend on electrolyte composition and processing time. The photocatalytic activity was tested by photodegrading methyl orange under simulated sunlight conditions. It was observed that photodegradation of methyl orange strongly depends on the concentration of TiO2 nanoparticles and sodium tungstate in the electrolyte and PEO treatment time. Coatings with the highest photoactivity were obtained in 4 g/L Na2SiO3 center dot 5H(2)O + 2 g/L Degussa P25 + 0.1 g/L Na2WO4 center dot 2H(2)O.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "Characterization and photocatalytic properties of tungsten doped TiO2 coatings on aluminum obtained by plasma electrolytic oxidation",
volume = "305",
pages = "192-199",
doi = "10.1016/j.surfcoat.2016.08.045"
}

Tadić, N., Stojadinović, S., Radić, N., Grbić, B.,& Vasilić, R.. (2016). Characterization and photocatalytic properties of tungsten doped TiO2 coatings on aluminum obtained by plasma electrolytic oxidation. in Surface and Coatings Technology
Elsevier., 305, 192-199.
https://doi.org/10.1016/j.surfcoat.2016.08.045

Tadić N, Stojadinović S, Radić N, Grbić B, Vasilić R. Characterization and photocatalytic properties of tungsten doped TiO2 coatings on aluminum obtained by plasma electrolytic oxidation. in Surface and Coatings Technology. 2016;305:192-199.
doi:10.1016/j.surfcoat.2016.08.045 .

Tadić, Nenad, Stojadinović, Stevan, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "Characterization and photocatalytic properties of tungsten doped TiO2 coatings on aluminum obtained by plasma electrolytic oxidation" in Surface and Coatings Technology, 305 (2016):192-199,
https://doi.org/10.1016/j.surfcoat.2016.08.045 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Vasilić, Rastko
AU  - Radić, Nenad
AU  - Tadić, Nenad
AU  - Stefanov, Plamen
AU  - Grbić, Boško
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1939
AB  - Tungsten doped Al2O3 /ZnO coatings are formed by plasma electrolytic oxidation of aluminum substrate in supporting electrolyte (0.1 M boric acid + 0.05 M borax + 2 g/L ZnO) with addition of different concentrations of Na2WO4 center dot 2H(2)O. The morphology, crystal structure, chemical composition, and light absorption characteristics of formed surface coatings are investigated. The X-ray diffraction and X-ray photoelectron spectroscopy results indicate that formed surface coatings consist of alpha and gamma phase of A(2)O(3), ZnO, metallic tungsten and WO3. Obtained results showed that incorporated tungsten does not have any influence on the absorption spectra of Al2O3/ZnO coatings, which showed invariable band edge at about 385 nm. The photocatalytic activity of undoped and tungsten doped Al2O3 /ZnO coatings is estimated by the photodegradation of methyl orange. The photocatalytic activity of tungsten doped A(2)O(3)/ZnO coatings is higher thanof undoped Al2O3 /ZnO coatings; the best photocatalytic activity is ascribed to coatings formed in supporting electrolyte with addition of 0.3 g/L Na2WO4 center dot 2H(2)O. Tungsten in A(2)O(3)/ZnO coatings acts as a charge trap, thus reducing the recombination rate of photogenerated electron-hole pairs. The results of PL measurements are in agreement with photocatalytic activity. Declining PL intensity corresponds to increasing photocatalytic activity of the coatings, indicating slower recombination of electron-hole pairs.
PB  - Elsevier
T2  - Applied Surface Science
T1  - The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis
VL  - 377
SP  - 37
EP  - 43
DO  - 10.1016/j.apsusc.2016.03.104
ER  - 

@article{
author = "Stojadinović, Stevan and Vasilić, Rastko and Radić, Nenad and Tadić, Nenad and Stefanov, Plamen and Grbić, Boško",
year = "2016",
abstract = "Tungsten doped Al2O3 /ZnO coatings are formed by plasma electrolytic oxidation of aluminum substrate in supporting electrolyte (0.1 M boric acid + 0.05 M borax + 2 g/L ZnO) with addition of different concentrations of Na2WO4 center dot 2H(2)O. The morphology, crystal structure, chemical composition, and light absorption characteristics of formed surface coatings are investigated. The X-ray diffraction and X-ray photoelectron spectroscopy results indicate that formed surface coatings consist of alpha and gamma phase of A(2)O(3), ZnO, metallic tungsten and WO3. Obtained results showed that incorporated tungsten does not have any influence on the absorption spectra of Al2O3/ZnO coatings, which showed invariable band edge at about 385 nm. The photocatalytic activity of undoped and tungsten doped Al2O3 /ZnO coatings is estimated by the photodegradation of methyl orange. The photocatalytic activity of tungsten doped A(2)O(3)/ZnO coatings is higher thanof undoped Al2O3 /ZnO coatings; the best photocatalytic activity is ascribed to coatings formed in supporting electrolyte with addition of 0.3 g/L Na2WO4 center dot 2H(2)O. Tungsten in A(2)O(3)/ZnO coatings acts as a charge trap, thus reducing the recombination rate of photogenerated electron-hole pairs. The results of PL measurements are in agreement with photocatalytic activity. Declining PL intensity corresponds to increasing photocatalytic activity of the coatings, indicating slower recombination of electron-hole pairs.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis",
volume = "377",
pages = "37-43",
doi = "10.1016/j.apsusc.2016.03.104"
}

Stojadinović, S., Vasilić, R., Radić, N., Tadić, N., Stefanov, P.,& Grbić, B.. (2016). The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis. in Applied Surface Science
Elsevier., 377, 37-43.
https://doi.org/10.1016/j.apsusc.2016.03.104

Stojadinović S, Vasilić R, Radić N, Tadić N, Stefanov P, Grbić B. The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis. in Applied Surface Science. 2016;377:37-43.
doi:10.1016/j.apsusc.2016.03.104 .

Stojadinović, Stevan, Vasilić, Rastko, Radić, Nenad, Tadić, Nenad, Stefanov, Plamen, Grbić, Boško, "The formation of tungsten doped Al2O3/ZnO coatings on aluminum by plasma electrolytic oxidation and their application in photocatalysis" in Applied Surface Science, 377 (2016):37-43,
https://doi.org/10.1016/j.apsusc.2016.03.104 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Maletić, Slavica
AU  - Stefanov, Plamen
AU  - Pacevski, Aleksandar
AU  - Vasilić, Rastko
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2034
AB  - In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation
VL  - 370
SP  - 218
EP  - 228
DO  - 10.1016/j.apsusc.2016.02.131
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Grbić, Boško and Maletić, Slavica and Stefanov, Plamen and Pacevski, Aleksandar and Vasilić, Rastko",
year = "2016",
abstract = "In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation",
volume = "370",
pages = "218-228",
doi = "10.1016/j.apsusc.2016.02.131"
}

Stojadinović, S., Radić, N., Grbić, B., Maletić, S., Stefanov, P., Pacevski, A.,& Vasilić, R.. (2016). Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science
Elsevier., 370, 218-228.
https://doi.org/10.1016/j.apsusc.2016.02.131

Stojadinović S, Radić N, Grbić B, Maletić S, Stefanov P, Pacevski A, Vasilić R. Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science. 2016;370:218-228.
doi:10.1016/j.apsusc.2016.02.131 .

Stojadinović, Stevan, Radić, Nenad, Grbić, Boško, Maletić, Slavica, Stefanov, Plamen, Pacevski, Aleksandar, Vasilić, Rastko, "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation" in Applied Surface Science, 370 (2016):218-228,
https://doi.org/10.1016/j.apsusc.2016.02.131 . .

TY  - JOUR
AU  - Stojadinović, Stevan
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Maletić, Slavica
AU  - Stefanov, Plamen
AU  - Pacevski, Aleksandar
AU  - Vasilić, Rastko
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4320
AB  - In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.
PB  - Elsevier
T2  - Applied Surface Science
T1  - Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation
VL  - 370
SP  - 218
EP  - 228
DO  - 10.1016/j.apsusc.2016.02.131
ER  - 

@article{
author = "Stojadinović, Stevan and Radić, Nenad and Grbić, Boško and Maletić, Slavica and Stefanov, Plamen and Pacevski, Aleksandar and Vasilić, Rastko",
year = "2016",
abstract = "In this paper, we used plasma electrolytic oxidation (PEO) of titanium in water solution containing 10 g/L Na3PO4 center dot 12H(2)O + 2 g/L Eu2O3 powder for preparation of TiO2:Eu3+ coatings. The surfaces of obtained coatings exhibit a typical PEO porous structure. The energy dispersive X-ray spectroscopy analysis showed that the coatings are mainly composed of Ti, O, P, and Eu; it is observed that Eu content in the coatings increases with PEO time. The X-ray diffraction analysis indicated that the coatings are crystallized and composed of anatase and rutile TiO2 phases, with anatase being the dominant one. X-ray photoelectron spectroscopy revealed that Ti 2p spin-orbit components of TiO2:Eu3+ coatings are shifted towards higher binding energy, with respect to pure TiO2 coatings, suggesting that Eu3+ ions are incorporated into TiO2 lattice. Diffuse reflectance spectroscopy showed that TiO2:Eu3+ coatings exhibit evident red shift with respect to the pure TiO2 coatings. Photoluminescence (PL) emission spectra of TiO2:Eu3+ coatings are characterized by sharp emission bands in orange-red region ascribed to f-f transitions of Eu3+ ions from excited level D-5(0) to lower levels F-7(J) (J=0, 1, 2, 3, and 4). The excitation PL spectra of TiO2:Eu3+ coatings can be divided into two regions: the broad band region from 250 nm to 350 nm associated with charge transfer state of Eu3+ and the series of sharp peaks in the range from 350 nm to 550 rim corresponding to direct excitation of the Eu3+ ions. It is observed that the intensity of peaks in excitation and emission PL spectra increases with the concentration of Eu3+, but the peak positions remain practically unchanged. The ratio of PL emission for electric and magnetic dipole transitions indicates highly asymmetric environment around Eu3+ ions. The photocatalytic activity (PA) of TiO2:Eu3+ coatings is evaluated by measuring the photodegradation of methyl orange under simulated sunlight conditions. It is shown that PEO time, i.e., the amount of Eu3+ incorporated into coatings is an important factor affecting PA; TiO2:Eu3+ coating formed after 1 min of PEO time showed the highest PA.",
publisher = "Elsevier",
journal = "Applied Surface Science",
title = "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation",
volume = "370",
pages = "218-228",
doi = "10.1016/j.apsusc.2016.02.131"
}

Stojadinović, S., Radić, N., Grbić, B., Maletić, S., Stefanov, P., Pacevski, A.,& Vasilić, R.. (2016). Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science
Elsevier., 370, 218-228.
https://doi.org/10.1016/j.apsusc.2016.02.131

Stojadinović S, Radić N, Grbić B, Maletić S, Stefanov P, Pacevski A, Vasilić R. Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation. in Applied Surface Science. 2016;370:218-228.
doi:10.1016/j.apsusc.2016.02.131 .

Stojadinović, Stevan, Radić, Nenad, Grbić, Boško, Maletić, Slavica, Stefanov, Plamen, Pacevski, Aleksandar, Vasilić, Rastko, "Structural, photoluminescent and photocatalytic properties of TiO2:Eu3+ coatings formed by plasma electrolytic oxidation" in Applied Surface Science, 370 (2016):218-228,
https://doi.org/10.1016/j.apsusc.2016.02.131 . .

TY  - JOUR
AU  - Stojadinović, Stevan D.J.
AU  - Tadić, Nenad
AU  - Radić, Nenad
AU  - Stojadinovic, B
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1722
AB  - Mixed Al2O3/ZnO coatings are prepared by conventional DC plasma electrolytic oxidation (PEO) of aluminum in boric acid and borax solution containing ZnO nanoparticles. Scanning electron microscopy equipped with energy dispersive x-ray spectroscopy, x-ray diffraction, and Raman spectroscopy were employed to monitor morphological, structural, and chemical changes of obtained oxide coatings. It was found that chemical and phase compositions strongly depend on PEO time. Photoluminescence and photodegradation of methyl orange served as a tool to estimate potential application of Al2O3/ZnO coatings. Photoluminescence measurements showed that clearly observable bands inherent to Al2O3 and ZnO are present in formed coatings, pointing at oxygen vacancies as the main source of photoluminescence. Longer PEO processing times proved beneficial for enhanced photocatalytic activity.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - Synthesis and characterization of Al2O3/ZnO coatings formed by plasma electrolytic oxidation
VL  - 276
SP  - 573
EP  - 579
DO  - 10.1016/j.surfcoat.2015.06.013
ER  - 

@article{
author = "Stojadinović, Stevan D.J. and Tadić, Nenad and Radić, Nenad and Stojadinovic, B and Grbić, Boško and Vasilić, Rastko",
year = "2015",
abstract = "Mixed Al2O3/ZnO coatings are prepared by conventional DC plasma electrolytic oxidation (PEO) of aluminum in boric acid and borax solution containing ZnO nanoparticles. Scanning electron microscopy equipped with energy dispersive x-ray spectroscopy, x-ray diffraction, and Raman spectroscopy were employed to monitor morphological, structural, and chemical changes of obtained oxide coatings. It was found that chemical and phase compositions strongly depend on PEO time. Photoluminescence and photodegradation of methyl orange served as a tool to estimate potential application of Al2O3/ZnO coatings. Photoluminescence measurements showed that clearly observable bands inherent to Al2O3 and ZnO are present in formed coatings, pointing at oxygen vacancies as the main source of photoluminescence. Longer PEO processing times proved beneficial for enhanced photocatalytic activity.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "Synthesis and characterization of Al2O3/ZnO coatings formed by plasma electrolytic oxidation",
volume = "276",
pages = "573-579",
doi = "10.1016/j.surfcoat.2015.06.013"
}

Stojadinović, S. D.J., Tadić, N., Radić, N., Stojadinovic, B., Grbić, B.,& Vasilić, R.. (2015). Synthesis and characterization of Al2O3/ZnO coatings formed by plasma electrolytic oxidation. in Surface and Coatings Technology
Elsevier., 276, 573-579.
https://doi.org/10.1016/j.surfcoat.2015.06.013

Stojadinović SD, Tadić N, Radić N, Stojadinovic B, Grbić B, Vasilić R. Synthesis and characterization of Al2O3/ZnO coatings formed by plasma electrolytic oxidation. in Surface and Coatings Technology. 2015;276:573-579.
doi:10.1016/j.surfcoat.2015.06.013 .

Stojadinović, Stevan D.J., Tadić, Nenad, Radić, Nenad, Stojadinovic, B, Grbić, Boško, Vasilić, Rastko, "Synthesis and characterization of Al2O3/ZnO coatings formed by plasma electrolytic oxidation" in Surface and Coatings Technology, 276 (2015):573-579,
https://doi.org/10.1016/j.surfcoat.2015.06.013 . .

TY  - JOUR
AU  - Vasilić, Rastko
AU  - Stojadinović, Stevan D.J.
AU  - Radić, Nenad
AU  - Stefanov, P
AU  - Dohcevic-Mitrovic, Z
AU  - Grbić, Boško
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1744
AB  - In this paper, we have investigated one-step preparation of vanadium doped TiO2 coatings formed by plasma electrolytic oxidation (PEO) of titanium in electrolyte containing 10 g/L Na3PO4 center dot 12H(2)O + 0.5 g/L NH4VO3. The morphology, phase structure, and elemental composition of the formed coatings were characterized by atomic force microscopy (AFM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS) techniques. Ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) was employed to evaluate the band gap energy of obtained coatings. Vanadium doped TiO2 coatings are partly crystallized and mainly composed of anatase phase TiO2, with up to about 2 wt% of vanadium present in the surface layer of the oxide. The valence band photoelectron spectra and UV-Vis DRS showed that vanadium doped TiO2 coatings exhibit notable red shift with respect to the pure TiO2 coatings. The photocatalytic activity was evaluated by monitoring the degradation of methyl orange under simulated sunlight conditions. Photocatalytic activity of vanadium doped TiO2 coatings increases with PEO time. Prolonged PEO times result in higher roughness of obtained coatings, thus increasing surface area available for methyl orange degradation. Vanadium doped TiO2 coatings obtained after 180 s of PEO time exhibit the best photocatalytic activity and about 67% of methyl orange is degraded after 12 h of irradiation under simulated sunlight.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings
VL  - 151
SP  - 337
EP  - 344
DO  - 10.1016/j.matchemphys.2014.11.077
ER  - 

@article{
author = "Vasilić, Rastko and Stojadinović, Stevan D.J. and Radić, Nenad and Stefanov, P and Dohcevic-Mitrovic, Z and Grbić, Boško",
year = "2015",
abstract = "In this paper, we have investigated one-step preparation of vanadium doped TiO2 coatings formed by plasma electrolytic oxidation (PEO) of titanium in electrolyte containing 10 g/L Na3PO4 center dot 12H(2)O + 0.5 g/L NH4VO3. The morphology, phase structure, and elemental composition of the formed coatings were characterized by atomic force microscopy (AFM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS) techniques. Ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) was employed to evaluate the band gap energy of obtained coatings. Vanadium doped TiO2 coatings are partly crystallized and mainly composed of anatase phase TiO2, with up to about 2 wt% of vanadium present in the surface layer of the oxide. The valence band photoelectron spectra and UV-Vis DRS showed that vanadium doped TiO2 coatings exhibit notable red shift with respect to the pure TiO2 coatings. The photocatalytic activity was evaluated by monitoring the degradation of methyl orange under simulated sunlight conditions. Photocatalytic activity of vanadium doped TiO2 coatings increases with PEO time. Prolonged PEO times result in higher roughness of obtained coatings, thus increasing surface area available for methyl orange degradation. Vanadium doped TiO2 coatings obtained after 180 s of PEO time exhibit the best photocatalytic activity and about 67% of methyl orange is degraded after 12 h of irradiation under simulated sunlight.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings",
volume = "151",
pages = "337-344",
doi = "10.1016/j.matchemphys.2014.11.077"
}

Vasilić, R., Stojadinović, S. D.J., Radić, N., Stefanov, P., Dohcevic-Mitrovic, Z.,& Grbić, B.. (2015). One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 151, 337-344.
https://doi.org/10.1016/j.matchemphys.2014.11.077

Vasilić R, Stojadinović SD, Radić N, Stefanov P, Dohcevic-Mitrovic Z, Grbić B. One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings. in Materials Chemistry and Physics. 2015;151:337-344.
doi:10.1016/j.matchemphys.2014.11.077 .

Vasilić, Rastko, Stojadinović, Stevan D.J., Radić, Nenad, Stefanov, P, Dohcevic-Mitrovic, Z, Grbić, Boško, "One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings" in Materials Chemistry and Physics, 151 (2015):337-344,
https://doi.org/10.1016/j.matchemphys.2014.11.077 . .

TY  - JOUR
AU  - Petrović, Srđan
AU  - Stojadinović, Stevan D.J.
AU  - Rožić, Ljiljana
AU  - Radić, Nenad
AU  - Grbić, Boško
AU  - Vasilić, Rastko
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1752
AB  - Plasma electrolytic oxidation of titanium in 12-tungstosilicic acid solution was investigated as a model reaction. The influence of the process parameters (concentration of 12-tungstosilicic acid solution, current density, and time) on the selected process response (efficiency of the methyl orange photodecolorization on the TiO2/WO3 coatings) was studied. A mathematical model was developed using a second-order response surface model with a central composite design incorporating the above-mentioned process parameters. The statistical analysis of experimental data indicates that a concentration of 12-tungstosilicic acid solution; process time, interaction between concentration and process time, and interaction between concentration and quadratic of process time have a significant effect on the methyl orange photodecolorization. Besides, the results show that obtained data were adequately fitted into the second-order polynomial model, since the calculated model F value (39.28) is higher than the critical F value. The values of coefficient of determination (R-2 = 0.960) and adjusted coefficient of determination (R-Adj.(2) = 0.937) are close to 1, indicating a high correlation between the observed and the predicted values. This model can also be useful for setting an optimum value of the process parameters for achieving the maximum efficiency of the methyl orange photodecolorization. Under the optimum conditions established in the region of experimentation (C = 1.14 . 10(-3) M, j = 153 mA/cm(2), and t = 58.9 s), a 38.6% (test duration of 8 h) efficiency of the methyl orange photodecolorization is obtained.
PB  - Elsevier
T2  - Surface and Coatings Technology
T1  - Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology
VL  - 269
SP  - 250
EP  - 257
DO  - 10.1016/j.surfcoat.2014.12.026
ER  - 

@article{
author = "Petrović, Srđan and Stojadinović, Stevan D.J. and Rožić, Ljiljana and Radić, Nenad and Grbić, Boško and Vasilić, Rastko",
year = "2015",
abstract = "Plasma electrolytic oxidation of titanium in 12-tungstosilicic acid solution was investigated as a model reaction. The influence of the process parameters (concentration of 12-tungstosilicic acid solution, current density, and time) on the selected process response (efficiency of the methyl orange photodecolorization on the TiO2/WO3 coatings) was studied. A mathematical model was developed using a second-order response surface model with a central composite design incorporating the above-mentioned process parameters. The statistical analysis of experimental data indicates that a concentration of 12-tungstosilicic acid solution; process time, interaction between concentration and process time, and interaction between concentration and quadratic of process time have a significant effect on the methyl orange photodecolorization. Besides, the results show that obtained data were adequately fitted into the second-order polynomial model, since the calculated model F value (39.28) is higher than the critical F value. The values of coefficient of determination (R-2 = 0.960) and adjusted coefficient of determination (R-Adj.(2) = 0.937) are close to 1, indicating a high correlation between the observed and the predicted values. This model can also be useful for setting an optimum value of the process parameters for achieving the maximum efficiency of the methyl orange photodecolorization. Under the optimum conditions established in the region of experimentation (C = 1.14 . 10(-3) M, j = 153 mA/cm(2), and t = 58.9 s), a 38.6% (test duration of 8 h) efficiency of the methyl orange photodecolorization is obtained.",
publisher = "Elsevier",
journal = "Surface and Coatings Technology",
title = "Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology",
volume = "269",
pages = "250-257",
doi = "10.1016/j.surfcoat.2014.12.026"
}

Petrović, S., Stojadinović, S. D.J., Rožić, L., Radić, N., Grbić, B.,& Vasilić, R.. (2015). Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology. in Surface and Coatings Technology
Elsevier., 269, 250-257.
https://doi.org/10.1016/j.surfcoat.2014.12.026

Petrović S, Stojadinović SD, Rožić L, Radić N, Grbić B, Vasilić R. Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology. in Surface and Coatings Technology. 2015;269:250-257.
doi:10.1016/j.surfcoat.2014.12.026 .

Petrović, Srđan, Stojadinović, Stevan D.J., Rožić, Ljiljana, Radić, Nenad, Grbić, Boško, Vasilić, Rastko, "Process modelling and analysis of plasma electrolytic oxidation of titanium for TiO2/WO3 thin film photocatalysts by response surface methodology" in Surface and Coatings Technology, 269 (2015):250-257,
https://doi.org/10.1016/j.surfcoat.2014.12.026 . .

TY  - JOUR
AU  - Rožić, Ljiljana
AU  - Grbić, Boško
AU  - Petrović, Srđan
AU  - Radić, Nenad
AU  - Damjanović, Ljiljana
AU  - Vuković, Zorica
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1788
AB  - This paper provides the correlation between the catalytic activity and selectivity of catalysts with various loadings of heteropolyacids over bentonite in the vapour phase 2-propanol oxidation. The catalysts are characterised by energy dispersive spectroscopy, differential scanning calorimeter, ammonia temperature programmed desorption, infrared spectroscopy and a nitrogen adsorption/desorption method. Energy dispersive spectroscopy results have shown satisfactory agreement regarding chemical composition that corresponds to the desired content of heteropolyacids on bentonite. Thermal analysis confirmed the thermal stability of catalysts under the investigated region of oxidation reaction. NH3-TPD spectra demonstrated that all catalysts include two types of acidic sites: weak adsorption centres up to 390 K and a broad distribution of stronger acidic sites at higher temperatures. The catalysts were active in the vapour-phase conversion of 2-propanol to acetone in the temperature region of 343-553 K. An increase of HPW loading improves selectivity towards acetone formation.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol
VL  - 167
SP  - 42
EP  - 48
DO  - 10.1016/j.matchemphys.2015.09.040
ER  - 

@article{
author = "Rožić, Ljiljana and Grbić, Boško and Petrović, Srđan and Radić, Nenad and Damjanović, Ljiljana and Vuković, Zorica",
year = "2015",
abstract = "This paper provides the correlation between the catalytic activity and selectivity of catalysts with various loadings of heteropolyacids over bentonite in the vapour phase 2-propanol oxidation. The catalysts are characterised by energy dispersive spectroscopy, differential scanning calorimeter, ammonia temperature programmed desorption, infrared spectroscopy and a nitrogen adsorption/desorption method. Energy dispersive spectroscopy results have shown satisfactory agreement regarding chemical composition that corresponds to the desired content of heteropolyacids on bentonite. Thermal analysis confirmed the thermal stability of catalysts under the investigated region of oxidation reaction. NH3-TPD spectra demonstrated that all catalysts include two types of acidic sites: weak adsorption centres up to 390 K and a broad distribution of stronger acidic sites at higher temperatures. The catalysts were active in the vapour-phase conversion of 2-propanol to acetone in the temperature region of 343-553 K. An increase of HPW loading improves selectivity towards acetone formation.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol",
volume = "167",
pages = "42-48",
doi = "10.1016/j.matchemphys.2015.09.040"
}

Rožić, L., Grbić, B., Petrović, S., Radić, N., Damjanović, L.,& Vuković, Z.. (2015). The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 167, 42-48.
https://doi.org/10.1016/j.matchemphys.2015.09.040

Rožić L, Grbić B, Petrović S, Radić N, Damjanović L, Vuković Z. The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol. in Materials Chemistry and Physics. 2015;167:42-48.
doi:10.1016/j.matchemphys.2015.09.040 .

Rožić, Ljiljana, Grbić, Boško, Petrović, Srđan, Radić, Nenad, Damjanović, Ljiljana, Vuković, Zorica, "The tungsten heteropolyacid supported on activated bentonites as catalyst for selective oxidation of 2-propanol" in Materials Chemistry and Physics, 167 (2015):42-48,
https://doi.org/10.1016/j.matchemphys.2015.09.040 . .