Studies of Several Systems with Air Electrode Electro-Synthesizing H_2O_2 on the Spot for Degr ading Aniline in Aqueous

作     者：Cao Xiao\|yu, Cai Nai\|cai , Wang Y u\|ling, Xie Ling\|ling College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430 072, Hubei, China 

作者机构：College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2003年第8卷第01A期

页      面：107-112页

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina (2 0 0 71 0 0 2 6) FoundationofEnvironmentalSciencesAcademyofJiangsuProvince 

主　　题：air electrode photo\|electro\|Fenton degrada tion of organic toxicants aniline 

摘      要：A gas diffusion electrode (air electrode) with a high current efficiency of electro\|synthesizing H 2 O 2 using O 2 in air was prepared. The several systems with air electrode as cathode of ele ctro\|synthesizing H 2 O 2 on the reaction spot for degrading aniline in aqueous--electro\|Fenton system, photo\|excitation electro\|H 2 O 2 system and photo\|electro\|Fenton system, were developed. Th e rates of decomposition of H 2 O 2 and mineralization of anil ine were experimentally measured respectively under different conditions, and th e results indicated there has an excellent parallel relation between decompositi on rate of H 2 O 2 and mineralization rate of aniline. Especia lly, photo\|electro\|Fenton system, where H 2 O 2 is decompose d the fastest, is the best system of oxidizing and degrading organic toxicants. Compared photo\|electro\|Fenton system with photo\|Fenton system, important role is revealed in the interface of air electrode. In this paper, the mineralizatio n mechanism of aniline in the photo\|electro\|Fenton system was also discussed.