Citation: YIN Yan-Feng, ZHOU Feng, ZHAN Su, YANG Yi-Fan, LIU Yu-Jun. Preparation of BiVO₄/BiPO₄ Composites With Enhanced Visible-Light-Driven Photocatalytic Properties[J]. Chinese Journal of Inorganic Chemistry, ;2016, 32(3): 483-490. doi: 10.11862/CJIC.2016.065 shu

Preparation of BiVO₄/BiPO₄ Composites With Enhanced Visible-Light-Driven Photocatalytic Properties

Department of Materials Science and Engineering, Dalian Maritime University, Dalian, Liaoning 116026, China

Corresponding author: ZHOU Feng, zhoufeng99@mails.tsinghua.edu.cn
Received Date: 22 July 2015
Revised Date: 13 January 2016

Figures(8)

BiVO₄/BiPO₄ composites with different n_V/n_P molar ratios were synthesized by a simple one-pot hydrothermal method. The n_V/n_P molar ratios were 0.1/9.9, 0.5/9.5, 1/9, 3/7, and 5/5, respectively. The BiVO₄/BiPO₄ composites were characterized by X-ray diffraction, field emission scanning electron microscope, energy-dispersive spectroscopy, Raman spectrum, UV-Vis spectrophotometer, UV-Vis diffuse reflectance spectroscopy, and electrochemical impedance spectra. The photocatalytic activities of BiVO₄/BiPO₄ composites were evaluated by the degradation of methylene blue (MB) under visible light irradiation (λ>420 nm). When the ratios of the BiVO₄/BiPO₄ composites were less than 3/7, the photocatalytic activities of BiVO₄/BiPO₄ composites were enhanced with an increasing amount of BiVO₄. The result showed that the BiVO₄/BiPO₄ composite ratio for n_V/n_P=3/7 possessed the highest photocatalytic activity. The BiVO₄/BiPO₄ composite ratio for n_V/n_P=3/7 possessed the maximal k value of 0.005 1 min^-1. It is 23.2 times of the pure BiPO₄. The photocatalytic mechanism of the BiVO₄/BiPO₄ composites could be mainly ascribed to the existence of BiVO₄ which could accelerate the separation and migration efficiency of photogenerated carriers.
- hydrothermal,
- BiVO₄,
- BiPO₄,
- photocatalytic activity,
- electron-hole pairs
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Preparation of BiVO4/BiPO4 Composites With Enhanced Visible-Light-Driven Photocatalytic Properties

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通讯作者: 陈斌, bchen63@163.com

Preparation of BiVO₄/BiPO₄ Composites With Enhanced Visible-Light-Driven Photocatalytic Properties