| 泡沫镍负载纳米ZnO-SnO2光催化降解三氯乙烯 |
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| 引用本文： | 张茂林,安太成,胡晓洪,王存,王新明,盛国英,傅家谟.泡沫镍负载纳米ZnO-SnO2光催化降解三氯乙烯[J].环境科学学报,2005,25(2):259-263. |
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| 作者姓名： | 张茂林 安太成 胡晓洪 王存 王新明 盛国英 傅家谟 |
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| 作者单位： | 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广东省环境资源利用与保护重点实验室,广州,510640 |
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| 基金项目： | 国家自然科学基金(40302013);广东省"十五"大气重大科技专项(2001A3040101);广东省自然科学基金(030466) |
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| 摘 要： | 采用比较简单的共沉淀法技术制备了纳米ZnO-SnO2复合氧化物光催化剂，并将其负载在泡沫镍上制成了负载型纳米光催化剂，以三氯乙烯为挥发性有机物的模型反应物，研究了反应气流速、湿度等因素对反应的影响，同时考察了催化剂的失活特征，结果表明该负载型纳米光催化剂具有较高的光催化活性，同时具有较强的抗失活性能，在205h反应中没有出现失活现象．
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| 关 键 词： | 负载型 失活 泡沫镍 纳米ZnO 反应 活性能 催化剂 SnO2 光催化降解 复合氧化物 |
| 文章编号： | 0253-2468(2005)02-0259-05 |
| 收稿时间： | 3/5/2004 12:00:00 AM |
| 修稿时间： | 2004年3月5日 |
Photocatalytic degradation of trichloroethylene in air on nanometer ZnO-SnO2 coupled oxides supported onto the porous nickel mesh |
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| ZHANG Maolin,AN Taicheng,HU Xiaohong,WANG Cun,WANG Xinming,SHENG Guoying and FU Jiamo.Photocatalytic degradation of trichloroethylene in air on nanometer ZnO-SnO2 coupled oxides supported onto the porous nickel mesh[J].Acta Scientiae Circumstantiae,2005,25(2):259-263. |
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| Authors: | ZHANG Maolin AN Taicheng HU Xiaohong WANG Cun WANG Xinming SHENG Guoying and FU Jiamo |
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| Institution: | State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640,State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510641,State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510642,State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510643,State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510644,State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510645 and State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510646 |
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| Abstract: | A coupled oxide ZnO-SnO2, which was prepared by the co-precipitation method, was immobilized to porous nickel mesh by coating, and a ZnO-SnO2/Ni supported photocatalyst was prepared. The photocatalytic degradation performance of the supported photocatalyst on chemical trichloroethylene (TCE) as gaseous model was investigated in the photocatalytic reactor.It was studied that some factors such as the gas flow rate, the relative humidity etc, which would influence the photocatalytic conversion efficiencies of TCE, and the lifetime of the supported photocatalyst also was tested. It was found that the gaseous photocatalysis over the supported photocatalyst is an efficient method for chlorinated hydrocarbon removal, and almost 100% conversion was found for TCE with a concentration up to 2350mg?m-3 in flow through dry synthetic gas stream. Moreover, the experiments keeping a long time run indicated the supported photocatalyst displayed long lifetime, and the deactivation of the supported photocatalyst had not been observed within the 205h of the experimental period. |
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| Keywords: | ZnO-SnO_2 trichloroethylene photocatalytic degradation supported photocatalyst |
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