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Photocatalytic degradation and reaction pathway studies of chlorinated hydrocarbons in gaseous phase

Wan Abu Bakar, Wan Azelee and Ali, Rusmidah and M. Y., Othman (2010) Photocatalytic degradation and reaction pathway studies of chlorinated hydrocarbons in gaseous phase. Scientia Iranica Transaction C-Chemistry and Chemical Engineering, 17 (1). 1 -14. ISSN 1026-3098

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Abstract

TiO2 was doped with various types of rst row transition metals towards the degradation of dichloromethane, chloroform, carbon tetrachloride and a mixture of carbon tetrachloride and chloroform.Zn2+/Fe3+/TiO2 photocatalyst with the ratio of 0.0005: 0.0005: 1 was revealed as the best catalyst inthis study. 41.05% of dichloromethane, 49.45% of chloroform and 37.84% of carbon tetrachloride weredegraded by this catalyst in the presence of UV light (6 W, 354 nm), irradiated for 90 minutes, and oxidizedVOCs gases were analyzed using GC-FID. In this study, the new species of CHCl+ 2 , CH2Cl+, CCl+2 and OCl+. CHCl+ 2 was detected to form from the photocatalytic degradation of chloroform while some new fragments, such as OCl+, CHCl+ 2 and CH2Cl+, are observed during the photocatalytic degradation of carbon tetrachloride.

Item Type:Article
Uncontrolled Keywords:photocatalyst, dichloromethane, chloroform, carbon tetrachloride titanium dioxide, chlorinated hydrocarbon, mineral components
Subjects:Q Science
Divisions:Science
ID Code:26627
Deposited By: Liza Porijo
Deposited On:18 Jul 2012 03:39
Last Modified:25 Aug 2014 03:26

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