Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (01): 154-160.doi: 10.3866/PKU.WHXB201228154

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Preparation of a Ag@AgCl-Modified TiO2-xCx Photocatalyst and Its Performance for Degradation of Pollutants under Visible Light

NIE Long-Hui, HU Yao, ZHANG Wang-Xi   

  1. School of Chemical and Environmental Engineering, Hubei University of Technology, Wuhan 430068, P. R. China
  • Received:2011-08-15 Revised:2011-11-08 Published:2011-12-29
  • Contact: NIE Long-Hui
  • Supported by:

    The project was supported by the Doctoral Foundation of Hubei University of Technology, China (BSQD0826).

Abstract: C-doped TiO2 was prepared from butyl titanate and glucose by a hydrothermal method. The prepared C-doped TiO2 was further modified with Ag@AgCl. The obtained samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), BET surface area analysis, and UV-Vis diffuse reflectance spectroscopy. The photocatalytic activity of the samples was evaluated by the degradation of methyl orange and phenol under the visible light irradiation (λ >420 nm). After modification with Ag@AgCl, the C-doped TiO2 samples had a larger particle size and smaller surface area with enhanced response to visible light and greatly improved visible-light photocatalytic activity. The degradation rates of methyl orange and phenol over Ag@AgCl/TiO2-xCx were 5.5 and 3.4 times as large as those over TiO2-xCx, respectively. The photocatalytic activity of Ag@AgCl/TiO2-xCx under visible light remained almost unchanged after three cycles.

Key words: Visible-light activity, Ag-AgCl, C-doped TiO2, Plasmon resonance, Methyl orange, Phenol


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