Effect of Thermal Treatment on the Photocatalytic Activity of Nanosize TiO

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Abstract Nanosize TiO_2 photocatalysts were thermal treated with programmed temperature in air atmosphere and photooxidation of phenol was used to evaluate the photocatalytic activity of resulting TiO_2. XRD and FTIR were adopted to identify phase structure, particle size and surface structure. The mechanism of thermal treatment on the photocatalytic activity of nanosize TiO_2 was discussed. The results show the photocatalytic activity of TiO_2 increases with the increase of thermal temperature until 400℃,above which the activity of TiO_2 decreases. Suitable surface structure,particle size and anatase phase were necessary for high photocatalytic activity of TiO_2 photocatalyst.

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Received 2004-05-15; published 2004-05-15

Cite this article:

LIU Shou-xin~.Effect of Thermal Treatment on the Photocatalytic Activity of Nanosize TiO_2[J] Chemcial Industry and Engineering, 2004,V21(3): 161-164

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