标题：Efficient degradation of clofibric acid by electro-enhanced peroxydisulfate activation with Fe-Cu/SBA-15 catalysts
作者： Lin, H (Lin, Heng); Zhong, X (Zhong, Xin); Ciotonea, C (Ciotonea, Carmen); Fan, XH (Fan, Xiaohui); Mao, XY (Mao, Xiaoyu); Li, YT (Li, Yating); Deng, B (Deng, Bin); Zhang, H (Zhang, Hui); Royer, S (Royer, Sebastien)
来源出版物：APPLIED CATALYSIS B-ENVIRONMENTAL 卷：230 页码: 1-10 DOI：10.1016/j.apcatb.2018.02.014 出版年： AUG 15 2018
摘要：Mesoporous silica supported mono and bimetallic oxides are employed for the degradation of clofibric acid (CFA) in the heterogeneous electro-enhanced persulfate activation system. The oxidation system includes heterogeneous peroxydisulfate (PDS, S2O82-) activation coupled with electrochemical process, leading to the production of highly reactive radicals (SO4 center dot(-) and center dot OH). The influence of degradation reaction parameters, amongst the initial solution pH, current density, S2O82- concentration and catalyst loading, is investigated. Efficiency of catalyst to generate reactive radicals is confirmed using electron paramagnetic resonance (EPR) analysis and radical quenching experiments. The catalytic performance was evaluated in terms of CFA concentration abatement, while the stability of catalyst is followed by quantifying the metal leaching into the aqueous solution during reaction and the evolution of surface characteristics of the materials before and after reaction. The main degradation intermediates were identified in order to propose a possible degradation pathway of CFA.
作者关键词：Clofibric acid; Sulfate radical; Hydroxyl radical; Heterogeneous catalysis; Electrochemical reaction
扩展关键词： HETEROGENEOUS FENTON CATALYST; RESPONSE-SURFACE METHODOLOGY; MESOPOROUS SILICA SPHERES; CARBON-FELT CATHODE; AQUEOUS-SOLUTION; ORANGE 7; WASTE-WATER; ELECTRO/FE2+/PEROXYDISULFATE PROCESS; ORGANIC CONTAMINANTS; RADICAL GENERATION
通讯作者地址：Zhang, H (reprint author), Wuhan Univ, Dept Sci & Environm Engn, Hubei Environm Remediat Mat Engn Technol Res Ctr, POB C319,Luoyu Rd 129, Wuhan 430079, Hubei, Peoples R China.
Royer, S (reprint author), Univ Artois, Univ Lille, CNRS, ENSCL,Cent Lille,UMR 8181,UCCS, F-59000 Lille, France.
[Lin, Heng; Zhong, Xin; Fan, Xiaohui; Mao, Xiaoyu; Li, Yating; Deng, Bin; Zhang, Hui] Wuhan Univ, Dept Sci & Environm Engn, Hubei Environm Remediat Mat Engn Technol Res Ctr, POB C319,Luoyu Rd 129, Wuhan 430079, Hubei, Peoples R China.
[Ciotonea, Carmen; Royer, Sebastien] Univ Artois, Univ Lille, CNRS, ENSCL,Cent Lille,UMR 8181,UCCS, F-59000 Lille, France.
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