Journal
CHEMICAL ENGINEERING JOURNAL
Volume 128, Issue 2-3, Pages 127-133Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2006.09.009
Keywords
photodegradation; combustion; 4-chlorophenol; visible light
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Carbon-modified TiO2, catalysts were synthesized from tetrabutyl titanate and glycine by a solution combustion method. The catalysts were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), XPS, UV-vis absorption and photocatalytic degradation of 4-chlorophenol (4-CP). The obtained catalysts show much high activities for degradation of 4-CP than that of Degussa P25 under irradiation at wavelengths longer than 400 nm. Hydroquinone (HQ), benzoquinone (BQ) and hydroxyhydroquinone (HHQ) were found to be the main intermediates of the photocatalytic 4-CP degradation with carbon-modified TiO2 by HPLC measurement. Moreover, the calcination time of synthesized TiO2 catalysts played a significant role in the photocatalytic activity. (c) 2007 Published by Elsevier B.V.
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