Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (6): 781-785.

• Articles • Previous Articles     Next Articles

Preparation and Visible-light Photocatalytic Activity of Mesoporous H3PW12O40/TiO2 Composite

KANG Wan-li1, LI Jin-huan2, HUANG Jian-bin1*, YU Xiao-dan3 and GUO Yi-hang3*   

  1. 1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China;
    2. Key Laboratory for Enhanced Oil Recovery, Ministry of Education, Daqing Petroleum Institute, Daqing 163318, P. R. China;
    3. School of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
  • Received:2008-12-16 Revised:2009-01-30 Online:2009-11-25 Published:2010-01-25
  • Contact: HUANG Jian-bin, E-mail: jbhuang@pku.edu.cn; GUO Yi-hang, E-mail: guoyh@nenu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20633010 and 20873181), and the Program of New Century Excellent Talents in University, China(No.NCET-04-0311).

Abstract:

Wormhole-like mesostructured H3PW12O40/TiO2 composite catalyst was prepared by the combination of sol-gel chemistry and solvothermal treatment technique in the presence of a triblock copolymer surfactant. Results of Raman spectra, XRD, BJH pore distribution and TEM image indicate that the composite possess a three-dimensionally interconnected pore mesostructure with a high porosity and large pore size. Keggin units were homogeneously dispersed throughout the composite. This composite can catalyze the photodegradation of crystal violet (CV) under visible-light. The photocatalytic activity is much higher than that of pure TiO2 or H3PW12O40/TiO2 composite prepared in the absence of the surfactant.

Key words: Nanostructure; Mesoporous material; Photocatalysis