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Citation: WANG Bao-wei, SUN Qi-mei, LI Yan-ping, LIU Si-han. Photocatalytic activity of nano-CuO/TiO2 composites prepared by a simple impregnated method[J]. Journal of Fuel Chemistry and Technology, ;2013, 41(6): 741-747. shu

Photocatalytic activity of nano-CuO/TiO2 composites prepared by a simple impregnated method

  • 1.

    Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

  • Corresponding author: WANG Bao-wei, 
  • Received Date: 6 December 2012
    Available Online: 6 January 2013

  • CuO/TiO2 composites were prepared by a simple impregnated method with Cu(NO3)2·3H2O and P25 as precursors. The characteristic of photocatalysts were analyzed by N2-physisorption, XRD, TEM, UV-vis DRS spectra. In this paper, the effects of Cu content, the scattered catalyst amount, calcination temperature of the photocatalyst and methanol concentration for the photocatalytic activity of CuO/TiO2 composites were studied. We also investigated the stability of the catalyst and proposed a mechanism of the photocatalytic process. The results suggested that the appropriate content of Cu component in CuO/TiO2 is 2.0%~7.5% and hydrogen production rate can reach 1 022 μmol/(h·g) at 2.0% of Cu content, 10% of methanol concentration, 350℃ of calcination temperature and 1.0 g/L of scattered catalyst amount. It was also demonstrated that CuO/TiO2 photocatalyst had a stable activity for H2 evolution.
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