Photodegradation of benzoic acid over metal-doped TiO2

Zhou, Jinkai, Zhang, Yuxin, Zhao, X. S. and Ray, Ajay K. (2006) Photodegradation of benzoic acid over metal-doped TiO2. Industrial & Engineering Chemistry Research, 45 10: 3503-3511. doi:10.1021/ie051098z

Author Zhou, Jinkai
Zhang, Yuxin
Zhao, X. S.
Ray, Ajay K.
Title Photodegradation of benzoic acid over metal-doped TiO2
Formatted title
Photodegradation of benzoic acid over metal-doped TiO2
Journal name Industrial & Engineering Chemistry Research   Check publisher's open access policy
ISSN 0888-5885
Publication date 2006-05
Sub-type Article (original research)
DOI 10.1021/ie051098z
Volume 45
Issue 10
Start page 3503
End page 3511
Total pages 9
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
A modified sol−gel method was employed to synthesize metal-doped TiO2 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 TiO2, 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.
Keyword Titanium-Dioxide Suspensions
Photocatalytic Activity
Heterogeneous Photocatalysis
Semiconductor Photocatalysis
Polycrystalline Tio2
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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