Combination of heterogeneous Fenton-like reaction and photocatalysis using Co–TiO_2 nanocatalyst for activation of KHSO_5 with visible light irradiation at ambient conditions

查看全文 作　　者：Qingkong [1,2,3]Chen;Fangying [2,3]Ji;Qian [4]Guo;Jianping [2,3]Fan;Xuan [2,3]Xu

机构地区：[1]School of River and Ocean Engineering, Chongqing Jiaotong University;[2]Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University;[3]National Centre for International Research of Low-carbon and Green Buildings, Chongqing University;[4]T.Y.Lin International Engineering Consulting (China) Co., Ltd

出　　处：《Journal of Environmental Sciences》索引2014年第26卷第12期,共11页

基　　金：supported by the Fundamental Research Funds for the Central Universities(No.CDJXS12210002);the Major Project Foundation of Science and Technology Innovation in Minister of Education(No.708071);the Financial Supports of the National Natural Science Foundation of China(No.51108483);Natural Science Foundation Project of CQ CSTC(No.cstcjjA 20002);the 111 Project(No.B13041) 摘　　要：A novel coupled system using Co–Ti O2was successfully designed which combined two different heterogeneous advanced oxidation processes,sulfate radical based Fenton-like reaction(SR-Fenton)and visible light photocatalysis(Vis-Photo),for degradation of organic contaminants.The synergistic effect of SR-Fenton and Vis-Photo was observed through comparative tests of 50 mg/L Rhodamine B(Rh B)degradation and TOC removal.The Rhodamine B degradation rate and TOC removal were 100%and 68.1%using the SR-Fenton/Vis-Photo combined process under ambient conditions,respectively.Moreover,based on XRD,XPS and UV-DRS characterization,it can be deduced that tricobalt tetroxide located on the surface of the catalyst is the SR-Fenton active site,and cobalt ion implanted in the Ti O2lattice is the reason for the visible light photocatalytic activity of Co–Ti O2.Finally,the effects of the calcination temperature and cobalt concentration on the synergistic performance were also investigated and a possible mechanism for the synergistic system was proposed.This coupled system exhibited excellent catalytic stability and reusability,and almost no dissolution of Co2+was found. 关键词：类FENTON反应可见光照射光催化活性纳米催化剂 CO 异构环境 TOC去除率

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Combination of heterogeneous Fenton-like reaction and photocatalysis using Co–TiO_2 nanocatalyst for activation of KHSO_5 with visible light irradiation at ambient conditions

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