Kinetic Aspects of Benzene Degradation over TiO2-N and Composite Fe/Bi2WO6/TiO2-N Photocatalysts under Irradiation with Visible Light Full article
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International Journal of Molecular Sciences
ISSN: 1422-0067 , E-ISSN: 1661-6596 |
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| Output data | Year: 2023, Volume: 24, Number: 6, Article number : 5693, Pages count : 17 DOI: 10.3390/ijms24065693 | ||||
| Tags | photocatalysis; visible light; N-doped TiO2; Bi2WO6; composite photocatalyst; benzene degradation; thermoactivation | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Science Foundation | 20-73-10135 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0007 |
| 3 | Russian Foundation for Basic Research | 19-33-60019 (АААА-А19-119111890026-5) |
Abstract:
In this study, composite materials based on nanocrystalline anatase TiO2 doped with nitrogen and bismuth tungstate are synthesized using a hydrothermal method. All samples are tested in the oxidation of volatile organic compounds under visible light to find the correlations between their physicochemical characteristics and photocatalytic activity. The kinetic aspects are studied both in batch and continuous-flow reactors, using ethanol and benzene as test compounds. The Bi2WO6/TiO2-N heterostructure enhanced with Fe species efficiently utilizes visible light in the blue region and exhibits much higher activity in the degradation of ethanol vapor than pristine TiO2-N. However, an increased activity of Fe/Bi2WO6/TiO2-N can have an adverse effect in the degradation of benzene vapor. A temporary deactivation of the photocatalyst can occur at a high concentration of benzene due to the fast accumulation of non-volatile intermediates on its surface. The formed intermediates suppress the adsorption of the initial benzene and substantially increase the time required for its complete removal from the gas phase. An increase in temperature up to 140 °C makes it possible to increase the rate of the overall oxidation process, and the use of the Fe/Bi2WO6/TiO2-N composite improves the selectivity of oxidation compared to pristine TiO2-N
Cite:
Lyulyukin M.
, Kovalevskiy N.
, Bukhtiyarov A.
, Kozlov D.
, Selishchev D.
Kinetic Aspects of Benzene Degradation over TiO2-N and Composite Fe/Bi2WO6/TiO2-N Photocatalysts under Irradiation with Visible Light
International Journal of Molecular Sciences. 2023. V.24. N6. 5693 :1-17. DOI: 10.3390/ijms24065693 WOS Scopus РИНЦ AN PMID OpenAlex
Kinetic Aspects of Benzene Degradation over TiO2-N and Composite Fe/Bi2WO6/TiO2-N Photocatalysts under Irradiation with Visible Light
International Journal of Molecular Sciences. 2023. V.24. N6. 5693 :1-17. DOI: 10.3390/ijms24065693 WOS Scopus РИНЦ AN PMID OpenAlex
Dates:
| Submitted: | Jan 23, 2023 |
| Accepted: | Mar 14, 2023 |
| Published print: | Mar 16, 2023 |
| Published online: | Mar 16, 2023 |
Identifiers:
| Web of science: | WOS:000959126000001 |
| Scopus: | 2-s2.0-85151111128 |
| Elibrary: | 54110348 |
| Chemical Abstracts: | 2023:702122 |
| PMID: | 36982767 |
| OpenAlex: | W4327731531 |