The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders
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...
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2018-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2018/0350-820X1801123P.pdf |
| _version_ | 1819259754985291776 |
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| author | Petrović Srđan Rožić Ljiljana Stojadinović Stevan Grbić Boško Vasilić Rastko Vuković Zorica Radić Nenad |
| author_facet | Petrović Srđan Rožić Ljiljana Stojadinović Stevan Grbić Boško Vasilić Rastko Vuković Zorica Radić Nenad |
| author_sort | Petrović Srđan |
| collection | DOAJ |
| description | 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. N2 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°C, followed by
significant decrease with its further increase. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172022, Grant no. 172026, Grant no. 172015,
Grant no. 172018, Grant no. 172001 and Grant no. III 45001] |
| first_indexed | 2024-12-23T19:15:03Z |
| format | Article |
| id | doaj.art-fb1ebde921b140acb095c908bed2dc41 |
| institution | Directory Open Access Journal |
| issn | 0350-820X 1820-7413 |
| language | English |
| last_indexed | 2024-12-23T19:15:03Z |
| publishDate | 2018-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-fb1ebde921b140acb095c908bed2dc412022-12-21T17:34:20ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X1820-74132018-01-0150112313210.2298/SOS1801123P0350-820X1801123PThe effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powdersPetrović Srđan0Rožić Ljiljana1Stojadinović Stevan2Grbić Boško3Vasilić Rastko4Vuković Zorica5Radić Nenad6IChTM-Department of Catalysis and Chemical Engineering, BelgradeIChTM-Department of Catalysis and Chemical Engineering, BelgradeFaculty of Physics, BelgradeIChTM-Department of Catalysis and Chemical Engineering, BelgradeFaculty of Physics, BelgradeIChTM-Department of Catalysis and Chemical Engineering, BelgradeIChTM-Department of Catalysis and Chemical Engineering, BelgradeIn 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. N2 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°C, followed by significant decrease with its further increase. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172022, Grant no. 172026, Grant no. 172015, Grant no. 172018, Grant no. 172001 and Grant no. III 45001]http://www.doiserbia.nb.rs/img/doi/0350-820X/2018/0350-820X1801123P.pdfWOx-TiO2 powderssinteringmesoporous structurephotocatalytic degradationAzo dye |
| spellingShingle | 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 TiO2 powders Science of Sintering WOx-TiO2 powders sintering mesoporous structure photocatalytic degradation Azo dye |
| title | The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders |
| title_full | The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders |
| title_fullStr | The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders |
| title_full_unstemmed | The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders |
| title_short | The effect of sintering temperature on mesoporous structure of WO3 doped TiO2 powders |
| title_sort | effect of sintering temperature on mesoporous structure of wo3 doped tio2 powders |
| topic | WOx-TiO2 powders sintering mesoporous structure photocatalytic degradation Azo dye |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2018/0350-820X1801123P.pdf |
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