| 复合催化剂Fe/ZnO-TiO_2的制备及其光催化活性 |
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| 引用本文： | 李翠霞,杨志忠,顾玉芬,林焰.复合催化剂Fe/ZnO-TiO_2的制备及其光催化活性[J].兰州理工大学学报,2008,34(5). |
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| 作者姓名： | 李翠霞 杨志忠 顾玉芬 林焰 |
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| 作者单位： | 1. 兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050;天津大学,材料科学与工程学院,天津,300072
2. 兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050 |
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| 摘 要： | 采用柠檬酸溶胶自燃烧法制备粒径为12～48 nm的复合催化剂Fe/ZnO-TiO2及纯TiO2粉体.用XRD、TEM对其进行表征,研究Fe3 、Zn2 的加入、柠檬酸的加入量、燃烧合成温度对粉体组成、结构的影响.以甲基橙为模型污染物,测试其光催化活性.结果表明,锐钛矿型向金红石型转变的临界温度为500～600 ℃.当Ti(OBu)4与柠檬酸的摩尔比为9∶12,合成温度为550 ℃时,复合催化剂的主晶相为金红石型TiO2,并有少量锐钛矿相和ZnTiO3,其光催化降解甲基橙效率最高,可达95%以上.
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| 关 键 词： | 光催化 复合催化剂 自燃烧法 甲基橙 |
Preparation of composite photocatalyst Fe/ZnO-TiO_2 and its photocatalytic activity |
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| LI Cui-xia,YANG Zhi-zhong,GU Yu-fen,LIN Yan.Preparation of composite photocatalyst Fe/ZnO-TiO_2 and its photocatalytic activity[J].Journal of Lanzhou University of Technology,2008,34(5). |
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| Authors: | LI Cui-xia YANG Zhi-zhong GU Yu-fen LIN Yan |
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| Institution: | LI Cui-xia1,2,YANG Zhi-zhong1,GU Yu-fen1,LIN Yan1(1.State Key Lab.of Gansu Advanced Non-ferrous Metal Materials,Lanzhou Univ.of Tech.,Lanzhou 730050,China,2.School of Materials Science , Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Composite photocatalysts Fe/ZnO-TiO2 with 12~48 nm in grain size and pure titanium dioxide powder were prepared with self-combustion process of citric acid sol.The structure and morphology of the materials were characterized by using XRD and TEM.The influence of the addition of Fe3+ and Zn2+,citric acid volume and reaction temperature on the composition and structure of powders was analyzed.Their photocatalytic activity was tested by taking the methyl orange as a pollutant on the model.The result showed tha... |
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| Keywords: | photocatalysis composite photocatalyst self-combustion methyl orange |
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