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In situ FTIR Study on Photo-catalytic Degradation of Trichloroethylene over TiO2

Authors Jiang, Chuanrui
Zheng, Chunli
Li, Xin-Yong View this author's profile
Wang, Li-Yuan
Zhang, Wen-Shuang
Chen, Guo-Hua View this author's profile
Issue Date 2009
Source Chemical journal OF CHINESE universities-chinese , v. 30, (3), 2009, MAR 10, p. 539-543
Summary Photo-degradation and gas-phase photocatalytic degradation on TiO2, of trichloroethy-lene were studied by in situ infrared spectroscopy. The results show that UV/TiO2, has a higher degradation capacity than UV on trichloroethylene. In the photocatalytic degradation process, dichloroacetyl chloride, carbon dioxide, carbon monoxide, water, hydrogen chloride and phosgene were detected. Base on the in situ FTIR spectra in different stages, the reaction mechanism of trichloroethylene photocatalysis on TiO2, was proposed : trichloroethylene was oxidized by hydroxyl radical and other free radical and formed to dichloroacetyl chloride. Finally, dichloroacetyl chloride was converted further to carbon dioxide, carbon monoxide, water, hydrogen chloride and phosgene.
ISSN 0251-0790
Language English
Format Article
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