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Title: Photodegradation of benzoic acid over metal-doped TiO2
Authors: Zhou, J.
Zhang, Y.
Zhao, X.S. 
Ray, A.K.
Issue Date: 10-May-2006
Citation: Zhou, J., Zhang, Y., Zhao, X.S., Ray, A.K. (2006-05-10). Photodegradation of benzoic acid over metal-doped TiO2. Industrial and Engineering Chemistry Research 45 (10) : 3503-3511. ScholarBank@NUS Repository.
Abstract: A modified sol-gel method was employed to synthesize metal-doped TiO 2 with varied dopant concentrations using titanium butoxide and metal nitrate hydrate as the precursors and hydrothermal posttreatment. The prepared samples were characterized by XRD, XPS, TEM, BET, UV-vis/diffuse reflectance, PZC measurement, Raman spectroscopy, photoluminescence, and fluorescence lifetime, while the photocatalytic activities were tested using benzoic acid as the model compound. Ga-doped TiO2 exhibits the highest photoactivity among the prepared metal-doped TiO2 photocatalysts. This is most likely due to the good dispersion of Ga dopant onto the surface of TiO 2, adequate surface area, and decrease of recombination center on the surface of Ga-doped TiO2 photocatalyst. The optimum dopant concentration was found to be 0.1 wt % for Ga-doped TiO2. © 2006 American Chemical Society.
Source Title: Industrial and Engineering Chemistry Research
ISSN: 08885885
DOI: 10.1021/ie051098z
Appears in Collections:Staff Publications

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