Efficient photocatalytic degradation of chloral hydrate in aqueous semiconductor suspension

Chloral hydrate was degraded in the presence of suspended TiO 2 by illumination with a super-high-pressure mercury lamp through the Pyrex glass wall of a cell. The addition of H 2O 2 enhanced the degradation rate 3.4 times. The degradation rate increases with pH in the absence of H 2O 2 and exhibits...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 1989-07, Vol.48 (1), p.155-159
Main Authors: Tanaka, Keiichi, Hisanaga, Teruaki, Harada, Kenji
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary:Chloral hydrate was degraded in the presence of suspended TiO 2 by illumination with a super-high-pressure mercury lamp through the Pyrex glass wall of a cell. The addition of H 2O 2 enhanced the degradation rate 3.4 times. The degradation rate increases with pH in the absence of H 2O 2 and exhibits a maximum at pH 5.5 in the presence of H 2O 2. Of the semiconductors tested ZnO was the most efficient catalyst. The effect of H 2O 2 was observed only with TiO 2 and WO 3.
ISSN:1010-6030
1873-2666
DOI:10.1016/1010-6030(89)87098-4