Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Enhanced Visible Light Activity and Stability of TiO2 Nanopowder by co-doped with Mo and N

  • Hu, Shaozheng (Institute of Eco-environmental Sciences, Liaoning Shihua University) ;
  • Li, Fayun (Institute of Eco-environmental Sciences, Liaoning Shihua University) ;
  • Fan, Zhiping (Institute of Eco-environmental Sciences, Liaoning Shihua University)
  • Received : 2011.12.15
  • Accepted : 2012.01.16
  • Published : 2012.04.20
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Abstract

A visible light responsive N, Mo co-doped $TiO_2$ were prepared by sol-gel method. X-ray diffraction, TEM, $N_2$ adsorption, UV-vis spectroscopy, photoluminescence, and X-ray photoelectron spectroscopy were used to characterize the prepared $TiO_2$ samples. Doping restrained the phase transformation from anatase to rutile and reduced the particle sizes. The band gap was much narrowed after N, Mo co-doping. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive dyestuff, methylene blue, under visible light. The photocatalytic activities of doped $TiO_2$ were much higher than that of neat $TiO_2$. The photocatalytic stability of N, Mo co-doped $TiO_2$ was much better than that of N doped $TiO_2$.

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