Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (05): 1337-1342.doi: 10.3866/PKU.WHXB20100533

• CATALYSIS AND SURFACE STRUCTURE • Previous Articles     Next Articles

Syntheses and Activities of Visible-Light-Driven Cu/BiVO4 Composite Photocatalysts

ZHANG Ai-Ping, ZHANG Jin-Zhi   

  1. College of Sciences, North China University of Technology, Beijing 100144, P. R. China
  • Received:2009-10-09 Revised:2010-03-04 Published:2010-04-29
  • Contact: ZHANG Ai-Ping E-mail:ncutalex@126.com

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 words: Photocatalysis, BiVO4, Composite photocatalyst, Visible-light, Hydrothermal method

MSC2000: 

  • O649