NDLI: Kinetic Aspects of Benzene Degradation over TiO2-N and Composite Fe/Bi2WO6/TiO2-N Photocatalysts under Irradiation with Visible Light.

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Kinetic Aspects of Benzene Degradation over TiO₂-N and Composite Fe/Bi₂WO₆/TiO₂-N Photocatalysts under Irradiation with Visible Light.

Content Provider	Europe PMC
Author	Lyulyukin, Mikhail Kovalevskiy, Nikita Bukhtiyarov, Andrey Kozlov, Denis Selishchev, Dmitry
Editor	Zhu, Junjiang
Copyright Year	2023
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.
Journal	International Journal of Molecular Sciences [Int J Mol Sci]
Volume Number	24
DOI	10.3390/ijms24065693
PubMed Central reference number	PMC10051460
Issue Number	6
PubMed reference number	36982767
e-ISSN	14220067
Language	English
Publisher	Molecular Diversity Preservation International (MDPI)
Publisher Date	2023-03-16
Access Restriction	Open
Subject Keyword	photocatalysis visible light N-doped TiO2 Bi2WO6 composite photocatalyst benzene degradation thermoactivation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Molecular Biology Spectroscopy Catalysis Computer Science Applications Medicine Inorganic Chemistry Organic Chemistry

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