Structural and fractal characterization of tungstophosphoric acid modified titanium dioxide photocatalyst
Само за регистроване кориснике
2017
Аутори
Petrović, SrđanRožić, Ljiljana
Vuković, Zorica
Grbić, Boško
Radić, Nenad
Stojadinović, Stevan
Vasilić, Rastko
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 mea...ns 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.
Кључне речи:
Fractal characterization / Tungstophosphoric acid / Titanium dioxide / Sol-gel / PhotocatalystИзвор:
Journal of Physics and Chemistry of Solids, 2017, 103, 95-102Издавач:
- Oxford : Pergamon-Elsevier Science Ltd
Финансирање / пројекти:
- Динамика нелинеарних физичкохемијских и биохемијских система са моделирањем и предвиђањем њихових понашања под неравнотежним условима (RS-172015)
- Проучавање физичкохемијских и биохемијских процеса у животној средини који утичу на загађење и истраживање могућности за минимизирање последица (RS-172001)
- Развој ефикаснијих хемијско-инжењерских процеса заснован на истраживањима феномена преноса и принципима интензификације процеса (RS-172022)
- Порозни материјали на бази оксида у заштити животне средине од генотоксичних супстанци (RS-172018)
- Хемијско и структурно дизајнирање наноматеријала за примену у медицини и инжењерству ткива (RS-172026)
DOI: 10.1016/j.jpcs.2016.12.002
ISSN: 0022-3697
WoS: 000393935000015
Scopus: 2-s2.0-85007124585
Институција/група
IHTMTY - 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 . .