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

• Published in: Tungsten Vol. 2; no. 3; pp. 240 - 250
• Main Authors: Cheng, Qiang, Zhang, Gao-Ke
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.09.2020; Springer Nature B.V
• 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; Volatile organic compound degradation; Modification; Tungsten trioxide; Photocatalytic oxidation
• ISSN: 2661-8028; 2661-8036
• DOI: 10.1007/s42864-020-00055-5

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.