Electrically enhanced photodegradati

Electrically enhanced photodegradation of an azodye(Acid Orange Ⅱ) using a Pt/TiO2 film electrode irradiating with an UV

A photoelectrochemical process in the degradation of anazodye (Acid Orange II) on a Pt/TiO2 film electrode wasinvestigated. By using the glass device and the voltage stabilizedsource of direct current, decolorization ratios higher than 78%were observed during a period of 5h. Comparing this value with thesum of the decolorization ratios obtained by a sole application ofelectrochemical(lower than 3%) and photochemical(about 23%)procedures, a significant synergic effect between both processeswas observed. The effects of adscititious voltage and pH value onthe decolorization ratios were obvious while the effect of theamount of aeration was minor.

作 者： SU Jing QUAN Xie CHEN Shuo ZHAO Ya-zhi CHEN Guo-hua   作者单位： SU Jing,QUAN Xie,CHEN Shuo,ZHAO Ya-zhi(School of Environmental Science and Technology, Dalian University of Technology, Dalian 116012, China)

CHEN Guo-hua(Department of Chemical Engineering, Hong Kong University of Science and Technology, Hong Kong SAR) 

刊 名： 环境科学学报(英文版)  ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2003 15(1)  分类号： X13  关键词： photoelectrochemical process   Pt/TiO2 film electrode   synergic effect  

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