Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (6): 91-96.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Preparation and Photocatalytic Activity of V -Doped TiO2 Powders

Liu Song1  Xie Tian-hua1  Zhang Zheng-guo2   yan Yan-qiong1   

  1. 1. School of Chemistry , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. School of Chemical and Energy Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-11-21 Online:2007-06-25 Published:2007-06-25
  • Contact: 柳松(1967-)，男，副教授，主要从事光催化及功能材料研究. E-mail:chsliu@scut. edu.cn
  • About author:柳松(1967-)，男，副教授，主要从事光催化及功能材料研究.
  • Supported by:

    华南理工大学传热强化与过程节能教育部重点实验室基金资助项目

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Abstract:

In order to improve the photocatalytic activity of TiO2 , vanadium-doped TiO2 catalysts were synthesized in two modes by means of sol-gel method , and the products were characterized by using XRD , TEM , XPS and UVVis spectroscopy , whose photocatalytic activity was then evaluated by the photocatalytic degradation of methyl orange. The results show that the prepared V -doped TiO2 anatase is 15 - 30 nm in diameter after calcination at 500℃ for 3 h and different from primary V -doped TiO2 .The characteristic peak of V 2p can not be detected by XPS on the surface of V -doped TiO2 coated with pure TiO2 • Moreover , it is verified by photocatalytic reaction that the catalysts possess higher photocatalytic efficiency when the mole ratio of V -doped TiO2 to pure TiO2 reaches a suitable value.

Key words: titania, photocatalysis, preparation, vanadium, doping