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Acta Phys. -Chim. Sin.  2010, Vol. 26 Issue (05): 1337-1342    DOI: 10.3866/PKU.WHXB20100533
CATALYSIS AND SURFACE STRUCTURE     
Syntheses and Activities of Visible-Light-Driven Cu/BiVO4 Composite Photocatalysts
ZHANG Ai-Ping, ZHANG Jin-Zhi
College of Sciences, North China University of Technology, Beijing 100144, P. R. China
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Abstract  

Cu-doped BiVO4 photocatalysts were hydrothermally synthesized and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflectance spectroscopy (DRS), and scanning electron microscopy (SEM). XRD showed that all the photocatalysts have the same single monoclinic sheelite structure. XPS results show that Cu exists on the surface of the BiVO4 catalysts as their stable oxide cation species. An absorption edge red-shift was obtained by DRS studies. The photocatalytic activity was investigated using methyl orange (MO) as a photocatalytic degradation model reactant. Results showed that the Cu-doped catalysts enhanced photocatalytic activities under visible-light irradiation. An enhanced photocatalytic mechanismwas also discussed.



Key wordsPhotocatalysis      BiVO4      Composite photocatalyst      Visible-light      Hydrothermal method     
Received: 09 October 2009      Published: 08 April 2010
MSC2000:  O649  
Corresponding Authors: ZHANG Ai-Ping     E-mail: ncutalex@126.com
Cite this article:

ZHANG Ai-Ping, ZHANG Jin-Zhi. Syntheses and Activities of Visible-Light-Driven Cu/BiVO4 Composite Photocatalysts. Acta Phys. -Chim. Sin., 2010, 26(05): 1337-1342.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20100533     OR     http://www.whxb.pku.edu.cn/Y2010/V26/I05/1337

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