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:2005-12-24 发布日期:2005-12-24
  • 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);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:2005-12-24 Published:2005-12-24

PDF (PC)

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+/H2O2 as 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 &#183;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

中图分类号: 

TrendMD: