Enhanced photocatalytic performance of tungsten-based photocatalysts for degradation of volatile organic compounds: a review

Photocatalytic oxidation process for the degradation of volatile organic compounds (VOCs) contaminants is a promising technology. But until now, the low photocatalytic activity of the conventional TiO 2 photocatalyst under visible-light irradiation hinders the deployment of this technique for VOCs d...

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Bibliographic Details
Published in:Tungsten 2020-09, Vol.2 (3), p.240-250
Main Authors: Cheng, Qiang, Zhang, Gao-Ke
Format: Article
Language:English
Subjects:
Adsorption
Catalytic activity
Chemistry and Materials Science
Contaminants
Current carriers
Efficiency
Energy conversion efficiency
Heterojunctions
Light
Light irradiation
Materials Engineering
Materials Science
Metallic Materials
Morphology
Nanoparticles
Nuclear Chemistry
Oxidation
Particle and Nuclear Physics
Photocatalysis
Photocatalysts
Photodegradation
Pollutants
Review Paper
Semiconductors
Titanium dioxide
Tungsten oxides
VOCs
Volatile organic compounds
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Summary:Photocatalytic oxidation process for the degradation of volatile organic compounds (VOCs) contaminants is a promising technology. But until now, the low photocatalytic activity of the conventional TiO 2 photocatalyst under visible-light irradiation hinders the deployment of this technique for VOCs degradation. WO 3 has been proved to be a suitable photocatalytic material for degradation of various VOCs as its appropriate band-gap, high stability and great capability. Nevertheless, the actual implementation of WO 3 is still restricted by short lifetime of photoexcited charge carriers and low light energy conversion efficiency: its photocatalytic performance is needed to be improved. This review discusses the process of tungsten-based photocatalyst for removal of VOCs and summarizes a variety of strategies to improve the VOCs oxidation performances of WO 3 , such as controlling the morphology structure, engendering chemical defects, coupling heterojunction, doping suitable dopants and loading a co-catalyst. In addition, the practical application of tungsten-based photocatalyst is discussed.
ISSN:2661-8028
2661-8036
DOI:10.1007/s42864-020-00055-5