| 稀土掺杂纳米TiO2光催化材料的制备和性能 |
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| 引用本文： | LI Cui-xia,李翠霞,杨志忠,王希靖. 稀土掺杂纳米TiO2光催化材料的制备和性能[J]. 兰州理工大学学报, 2009, 35(1) |
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| 作者姓名： | LI Cui-xia 李翠霞 杨志忠 王希靖 |
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| 作者单位： | 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;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： | 采用溶胶-凝胶法制备稀土(La,Eu,Ce)掺杂纳米TiO2光催化材料,通过XRD、TEM等手段对其进行表征.以甲基橙为模型污染物,测试其光催化活性.研究稀土掺杂量、烧结温度和烧结时间对TiO2光催化活性的影响.结果表明,各因素对材料的催化活性均存在一个最佳值;除500 ℃烧结的Eu-TiO2样品由纯锐钛矿相组成外,其余样品均由锐钛矿和金红石混晶组成,而未见稀土氧化物;稀土掺杂可显著提高TiO2的光催化活性,其中Eu-TiO2对甲基橙的光降解率可达91.05%.
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| 关 键 词： | 无机非金属材料 掺杂 溶胶-凝胶法 光催化 光降解 |
Preparation of nano-TiO_2 photocatalyst doped with rare-earth and its property |
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| LI Cui-xia,,YANG Zhi-zhong,WANG Xi-jing. Preparation of nano-TiO_2 photocatalyst doped with rare-earth and its property[J]. Journal of Lanzhou University of Technology, 2009, 35(1) |
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| Authors: | LI Cui-xia YANG Zhi-zhong WANG Xi-jing |
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| Affiliation: | 1.State Key Lab.of Gansu Advanced Non-ferrous Metal Materials;Lanzhou Univ.of Tech.;Lanzhou 730050;China;2.School of Materials Science and Engineering;Tianjin University;Tianjin 300072;China |
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| Abstract: | Nano-TiO2 photocatalyst doped with three rare-earth elements(La,Eu,and Ce) were prepared by means of sol-gel processing.The structure and morphology of the samples obtained were characterized with XRD and TEM.Taking the methyl orange as a modeled photodegradative substance,the photocatalytic activity of the nano-TiO2 was tested and the effects of rare-earth amounts,sintering temperature,and sintering time on the photocatalytic activity of nano-TiO2 were investigated.The results showed that there was an opti... |
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| Keywords: | inorganic non-metallic materials doping sol-gel processing photocatalysis photodegradation |
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