Citation: Chunjing Shi, Xiaoli Dong, Xiuying Wang, Hongchao Ma, Xiufang Zhang. Ag nanoparticles deposited on oxygen-vacancy-containing BiVO₄ for enhanced near-infrared photocatalytic activity[J]. Chinese Journal of Catalysis, ;2018, 39(1): 128-137. doi: 10.1016/S1872-2067(17)62990-5 shu

Ag nanoparticles deposited on oxygen-vacancy-containing BiVO₄ for enhanced near-infrared photocatalytic activity

School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China

Received Date: 30 August 2017
Revised Date: 31 October 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (21476033).

This study investigates the photodegradation of the organic dye rhodamine B by Ag-nanoparticle-containing BiVO₄ catalysts under different irradiation conditions. The catalysts consist of Ag nanoparticles deposited on oxygen-vacancy-containing BiVO₄. The morphology of the BiVO₄ is olive shaped, and it has a uniform size distribution. The BiVO₄ possesses a high oxygen vacancy density, and the resulting Ag nanoparticle-BiVO₄ catalyst exhibits higher photocatalytic activity than BiVO₄. The RhB degradation by the Ag nanoparticle-BiVO₄ catalyst is 99% after 100 min of simulated solar irradiation. BiVO₄ containing oxygen vacancies as a rationally designed support extends the catalyst response into the near-infrared region, and facilitates the trapping and transfer of plasmonic hot electrons. The enhanced photocatalytic efficiency is attributed to charge transfer from the BiVO₄ to Ag nanoparticles, and surface plasmon resonance of the Ag nanoparticles. These insights into electron-hole separation and charge transfer may arouse interest in solar-driven wastewater treatment and water splitting.
- Bismuth vanadate,
- Oxygen vacancy,
- Silver nanoparticle,
- Surface plasmon resonance,
- Solar-driven
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Ag nanoparticles deposited on oxygen-vacancy-containing BiVO4 for enhanced near-infrared photocatalytic activity

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通讯作者: 陈斌, bchen63@163.com

Ag nanoparticles deposited on oxygen-vacancy-containing BiVO₄ for enhanced near-infrared photocatalytic activity