Analysis of Energetic Species Caused by Contact Glow Discharge Electrolysis in Aqueous Solution  

作　　者：高锦章 王爱香 付燕 吴建林 马东平 郭晓 李岩 杨武 

机构地区：[1]College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China

出　　处：《Plasma Science and Technology》2008年第1期30-38,共9页等离子体科学和技术（英文版）

基　　金：the Key Project of Science and Technology of Education Ministry(00250);the Natural Science Foundation of Gansu Province(3ZS041-A25-028);the Invention Project of Science & Technology of NWNU(KJCXGC-01);Gansu Key Lab of Polymer Materials,China.

摘　　要：Contact glow discharge electrolysis is a non-Faradaic electrochemical process with an abnormal relationship between the current and voltage. Hydroxyl radicals, hydrogen radicals and hydrogen peroxide can be produced under the glow discharge, which are often used to degrade organic contaminants in aqueous solution. In this study, with 4-nitrophenol taken as an example of contaminants and tert-butanol as a scavenger of hydroxyl radicals, the role of energetic species in degrading organic compounds was examined in detail. Moreover, the effects of the applied voltage, solution conductivity and pH on the formation of three energetic species were also observed. The formation rate constants of the three energetic species were calculated based on the experimental data.Contact glow discharge electrolysis is a non-Faradaic electrochemical process with an abnormal relationship between the current and voltage. Hydroxyl radicals, hydrogen radicals and hydrogen peroxide can be produced under the glow discharge, which are often used to degrade organic contaminants in aqueous solution. In this study, with 4-nitrophenol taken as an example of contaminants and tert-butanol as a scavenger of hydroxyl radicals, the role of energetic species in degrading organic compounds was examined in detail. Moreover, the effects of the applied voltage, solution conductivity and pH on the formation of three energetic species were also observed. The formation rate constants of the three energetic species were calculated based on the experimental data.

关 键 词：contact glow discharge electrolysis ANALYSIS energetic species formation rate constant 

分 类 号：X132[环境科学与工程—环境科学]