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异相Fenton光催化对有毒有机污染物的降解 预览 被引量:9

Degradation of RhB by Heterogeneous Fenton System under Visible Irradiation
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摘要 以蒙脱石-K10(Montmorillonite K10)作为Fe^3+的载体制备异相Fenton催化剂(Mot-Fe),并用此催化剂在可见光(λ>420 nm)照射下研究其降解染料罗丹明B(Rhodamine B,RhB)和2,4-二氯苯酚(2,4-Dichlorophenol,DCP).研究表明,选定的MotFe/H2O2体系能有效地降解RhB,反应300 min脱色完全,总有机碳(TOC)去除率达85.2%,反应过程中主要涉及到·OH自由基的产生和参与.可见光照射下,对DCP/MotFe/H2O2体系,TOC的去除率达到51.6%.催化剂具有比较好的稳定性,能够重复使用. Fe^3+ supported on Montmorillonite K10 as effective catalyst for heterogeneous oxidation was prepared. The catalyst was applied for the degradation of Rhodamine B (RhB) and 2, 4-Dichlorophenol (DCP) under visible irradiation (λ〉420 nm). UV-Vis spectroscopy measurement was made to detect the photoreaction process. The results showed that RhB could be efficiently decolored by chosing RhB/ Mot-Fe/H2O2 system for 300 min irradiation, and the TOC removal rate was 85.2%. DCP mineralized rate was 51.6% at the chosen DCP/FeY/H2O2 system under visible irradiation. The oxidative process was predominated mainly by the .OH radical generated in the system. This solid catalyst was stable for repeated application with little loss of activity.
作者 赵超 方艳芬 黄应平 邓安平 姜利荣 ZHAO Chao, FANG Yan-fen, HUANG Ying-ping,DENG An-ping,JIANG Li-rong College of Chemistry, Central China Normal University, Wuhan 430072, 2. Alan G. Macdiarmid Research Institute of Renewable Energy, China Three Gorges University, Yichang , Hub 443002)
出处 《分析科学学报》 CAS CSCD 2007年第3期 273-276,共4页 Journal of Analytical Science
基金 国家自然科学基金(No.20373074,No.50639070) 湖北省青年杰出人才基金(No.2005ABB030) 湖北省教育厅自然科学重大基金研究项目(No.2004Z001).
关键词 异相Fenton 脱色降解 蒙脱石 Heterogeneous Fenton Decolorization Montmorillonite
作者简介 通讯联系人:黄应平,男,博士,教授,博士生导师,从事水污染控制研究.
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