| 可见光/Fenton光催化降解有机染料 |
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| 引用本文： | 黄应平,刘德富,张水英,张德莉,马万红,赵进才.可见光/Fenton光催化降解有机染料[J].高等学校化学学报,2005,26(12):2273-2278. |
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| 作者姓名： | 黄应平 刘德富 张水英 张德莉 马万红 赵进才 |
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| 作者单位： | 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 |
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| 基金项目： | 中国科学院资助项目;科技部科研项目;湖北省新世纪高层次人才工程项目 |
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| 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.
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| 关 键 词： | Fenton Rhodamine B 光催化 降解 |
| 文章编号： | 0251-0790（2005）12-2273-06 |
| 收稿时间： | 10 18 2004 12:00AM |
| 修稿时间： | 2004-10-18 |
Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation |
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| HUANG Ying-Ping,LIU De-Fu,ZHANG Shui-Ying,ZHANG De-Li,MA Wan-Hong,ZHAO Jin-Cai.Fenton Photocatalytic Degradation of Organic Dye Under Visible Irradiation[J].Chemical Research In Chinese Universities,2005,26(12):2273-2278. |
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| Authors: | HUANG Ying-Ping LIU De-Fu ZHANG Shui-Ying ZHANG De-Li MA Wan-Hong ZHAO Jin-Cai |
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| Institution: | 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, Belting 100080, China |
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| 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. |
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| Keywords: | Fenton Rhodamine B |
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