高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (12): 2273.

• 研究论文 • 上一篇    下一篇

可见光/Fenton光催化降解有机染料

黄应平1,刘德富1,张水英1,张德莉1,马万红2,赵进才2   

  1. 1.三峡大学生态与环境科学研究中心,宜昌443002;
    2.中国科学院化学研究所,分子科学研究中心,北京100080
  • 收稿日期:2004-10-18 出版日期:1905-03-14 发布日期:1905-03-14
  • 通讯作者: 黄应平(1964年出生),男,博士,教授,从事光催化研究.E-mail:Huangyp@ctgu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20373074)、国家重点基础研究发展计划(批准号:2003CB415006-3)和湖北省高层次人才基金资助.

Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation

HUANG Ying-Ping1*, LIU De-Fu1, ZHANG Shui-Ying1, ZHANG De-Li1, MA Wan-Hong2, ZHAO Jin-Cai2   

  1. 1. Research Center for Eco-environmental Sciences, China Three Gorges University, Yichang 443002, China;
    2. Research Center of Molecule Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2004-10-18 Online:1905-03-14 Published:1905-03-14
  • Contact: HUANG Ying-Ping;E-mail:Huangyp@ctgu.edu.cn

被引次数

124

摘要：

采用Fenton试剂(Fe3+/H2O2)在可见光条件下(λ＞450nm)光催化降解目标染料化合物罗丹明B(RhodamineB,RhB).在pH＜3.0体系中用可见光照射,能使RhB染料在光敏化作用下有效降解,反应160min后矿化率达到71.8%.采用ESR和溴甲酚绿(Bromocresolgreen,BCG)法跟踪测定活性氧化物种,通过对RhB降解过程的紫外-可见光谱、红外光谱分析及总有机碳量(TOC)跟踪测定,结果表明，Fe3+/H2O2/RhB体系在可见光照射下主要的活性氧化物种为羟基自由基,能有效地降解RhB.

关键词: Fenton;RhodamineB;光催化;降解, Fenton, Rhodamine B, 光催化, 降解

Abstract:

A photooxidative system for degradation of organic dye pollutant RhB as an objective compound was reported under visible irradiation(λ＞450 nm) by using Fe3+/H2O2as the Fenton reagent. It was found that, in the system with pH＜3.0, visible light irradiation significantly accelerates the degradation process by photosensitive effect. After 160 min the RhB was mineralized with a yield of 71.8%. Bromocresol green reaction spectrophotometrically, spin-trapping electron paramagnetic resonance, UV-Vis spectroscopy, IR and total organic carbon(TOC) measurements were used to detect the photoreaction process. The photocatalytic degradation pathway mainly involves the formation of ·OH and carboxylie acids are the main intermediate products. H2O2 of Fe3+/H2O2/RhB system was utilized lowlier than that of supermolecular metal/organie complexes or supported catalysts system.

Key words: Fenton; Rhodamine B; Photocatalysis; Degradation, Fenton, Rhodamine B, Photocatalysis, Degradation

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