Photocatalytic degradation of dichlorvos in aqueous TiO₂ suspensions

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• 作者：Tatiana Oncescu ; Mihaela I. Stefan and Petruta Oancea
• 关键词：Dichlorvos ; Pesticides ; Reaction mechanism ; TiO2 photocatalysis
• 刊名：Environmental Science and Pollution Research
• 出版年：2010
• 出版时间：June, 2010
• 年：2010
• 卷：17
• 期：5
• 页码：1158-1166
• 全文大小：196.2 KB

文摘

Introduction In the present work, we explored the kinetics of dichlorvos (2,2-dichlorvinyl dimethyl phosphate, DDVP) decay through UV-A light-induced TiO₂ photocatalysis at pH 4 and 9, and the formation of degradation intermediates and final products under specific experimental conditions. Experimental observations and theoretical considerations allowed us to suggest the degradation mechanism of DDVP by the UV/TiO₂ process in aqueous solution.