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Article

Enhanced Photocatalytic Activity and Stability of Bi2WO6 – TiO2-N Nanocomposites in the Oxidation of Volatile Pollutants

1
Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2
Research and Educational Center “Institute of Chemical Technologies”, Novosibirsk State University, 630090 Novosibirsk, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Alexandru Mihai Grumezescu and Oana Gherasim
Nanomaterials 2022, 12(3), 359; https://doi.org/10.3390/nano12030359
Received: 4 December 2021 / Revised: 17 January 2022 / Accepted: 19 January 2022 / Published: 23 January 2022
(This article belongs to the Special Issue Metallic and Metal Oxide Nanoparticles and Their Applications)
The development of active and stable photocatalysts for the degradation of volatile organic compounds under visible light is important for efficient light utilization and environmental protection. Titanium dioxide doped with nitrogen is known to have a high activity but it exhibits a relatively low stability due to a gradual degradation of nitrogen species under highly powerful radiation. In this paper, we show that the combination of N-doped TiO2 with bismuth tungstate prevents its degradation during the photocatalytic process and results in a very stable composite photocatalyst. The synthesis of Bi2WO6–TiO2-N composites is preformed through the hydrothermal treatment of an aqueous medium containing nanocrystalline N-doped TiO2, as well as bismuth (III) nitrate and sodium tungstate followed by drying in air. The effect of the molar ratio between the components on their characteristics and photocatalytic activity is discussed. In addition to an enhanced stability, the composite photocatalysts with a low content of Bi2WO6 also exhibit an enhanced activity that is substantially higher than the activity of individual TiO2-N and Bi2WO6 materials. Thus, the Bi2WO6–TiO2-N composite has the potential as an active and stable photocatalyst for efficient purification of air. View Full-Text
Keywords: photocatalysis; VOC oxidation; UV; visible light; composite photocatalyst; N-doped TiO2; Bi2WO6; stability test photocatalysis; VOC oxidation; UV; visible light; composite photocatalyst; N-doped TiO2; Bi2WO6; stability test
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MDPI and ACS Style

Kovalevskiy, N.; Cherepanova, S.; Gerasimov, E.; Lyulyukin, M.; Solovyeva, M.; Prosvirin, I.; Kozlov, D.; Selishchev, D. Enhanced Photocatalytic Activity and Stability of Bi2WO6 – TiO2-N Nanocomposites in the Oxidation of Volatile Pollutants. Nanomaterials 2022, 12, 359. https://doi.org/10.3390/nano12030359

AMA Style

Kovalevskiy N, Cherepanova S, Gerasimov E, Lyulyukin M, Solovyeva M, Prosvirin I, Kozlov D, Selishchev D. Enhanced Photocatalytic Activity and Stability of Bi2WO6 – TiO2-N Nanocomposites in the Oxidation of Volatile Pollutants. Nanomaterials. 2022; 12(3):359. https://doi.org/10.3390/nano12030359

Chicago/Turabian Style

Kovalevskiy, Nikita, Svetlana Cherepanova, Evgeny Gerasimov, Mikhail Lyulyukin, Maria Solovyeva, Igor Prosvirin, Denis Kozlov, and Dmitry Selishchev. 2022. "Enhanced Photocatalytic Activity and Stability of Bi2WO6 – TiO2-N Nanocomposites in the Oxidation of Volatile Pollutants" Nanomaterials 12, no. 3: 359. https://doi.org/10.3390/nano12030359

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