文献类型：期刊文章

作　　者：余金礼[1] 刘天夫[2] 刘海越[2] 王毅[2]

机构地区：[1]广东省低碳化学与过程节能重点实验室,中山大学材料科学与工程学院,广东广州510275 [2]中山大学化学工程与技术学院,广东珠海519082

出　　处：《Chinese Journal of Catalysis》

基　　金：supported by the Sino-Greek Science and Technology Cooperation Project (2013DFG62590);the National Natural Science Foundation of China (21575299, 21576300, 21276290);Guangdong Province Nature Science Foundation (2014A030313150);Guangzhou Science and Technology Plan Project (201607010104)~~

年　　份：2016

卷　　号：37

期　　号：12

起止页码：2079-2085

语　　种：中文

收录情况：AJ、BDHX、BDHX2014、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EI(收录号：20170203242032)、JST、RSC、SCI-EXPANDED(收录号：WOS:000391777500005)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：An energy-effective polyaniline coated graphite felt （PANI@GF） composite cathode for the elec- tro-Fenton （E-Fenton） process was synthesized through an electro-polymerization method. The electrocatalytic activity of the cathode for the 2e- ORR process was investigated and dimethyl phthalate （DMP） was used as a model substrate to evaluate its performance in the E-Fenton process. The as-prepared PANI@GF composite possessed a three-dimensional porous structure, which is favorable for 02 diffusion, while the large amount of N atoms in the conductive polyaniline （PANI） enhanced 2e- ORR reactivity. The DMP degradation of the E-Fenton system using PANI@GF was significantly enhanced owing to the improvement in ORR performance. The apparent kinetic con- stant for DMP degradation was 0.0753 min-1, five times larger than that of GF. The optimal carboni- zation temperature and polymerization time for the preparation of the PANI@GF composite cath- ode was found to be 900 ℃ and 1 h, respectively. Measurement conditions are a crucial factor for proper evaluation of cathode electrocatalytic performance. Accordingly, the 02 flow rate, Fe^2＋ con- centration, and pH for DMP degradation were optimized at 0.4 L/min, 1.0 mmol/L, and 3.0, respec- tively. These results indicate that the present PANI@GF composite cathode is energy-effective and promising for potential use as an E-Fenton system cathode for the removal of organic pollutants in wastewater.

关 键 词：Electrocatalysis Oxygen reduction reaction Electro-polymerizationElectro-FentonDimethyl phthalate degradation  

分 类 号：O646.54] O643.3[化学类]