Photocatalytic Degradation of Gaseous Chloroethylene Mixtures Using UV-illuminated Titanium Dioxide
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- OZAKI Shigeko
- Graduate School of Environment and Information Sciences, Yokohama National University
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- ZHAO Lian-hua
- Graduate School of Environment and Information Sciences, Yokohama National University
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- ITOH Kiminori
- Graduate School of Environment and Information Sciences, Yokohama National University
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- MURABAYASHI Masayuki
- Graduate School of Environment and Information Sciences, Yokohama National University
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Abstract
<p>The gas-phase photocatalytic decomposition of individual- and two-component mixtures of chloroethylenes using near-UV-illuminated TiO2 was studied. The apparent quantum efficiencies for the degradation of cis-1,2-dichloro- (0.42), trichloro- (9.6), and tetrachloroethylene (10.6) were found to increase with the number of chlorine substituents. cis-1,2-Dichloro- and trichloroethylene in the presence of tetrachloroethylene decomposed with higher quantum efficiency, specifically, 1.6 and 11.7, respectively. The decomposition of cis-1,2-dichloroethylene in the mixtures was remarkably promoted, while the apparent quantum efficiency of tetrachloroethylene to function as an accelerator showed a decrease for the decomposition with cis-1,2-dichloroethylene (3.6) or with trichloroethylene (9.1). These findings were explained in terms of the presence of chlorine atoms in photochemical and photocatalytic reactions.</p>
Journal
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- Electrochemistry
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Electrochemistry 70 (6), 421-424, 2002-06-05
The Electrochemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390001277348153472
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- NII Article ID
- 10008573469
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- NII Book ID
- AN00151637
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- ISSN
- 21862451
- 13443542
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- NDL BIB ID
- 6179910
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Allowed