| Synthesis and Photocatalytic Activity of TiO2/V2O5 Composite Catalyst Doped with Rare Earth Ions |
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| 作者姓名： | 刘建华 杨蓉 李松梅 |
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| 作者单位： | School of Materials Science and Engineering, Beihang University, Beijing 100083, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China （50571003） |
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| 摘 要： | TiO2/V2O5 catalyst doped with rare earth ions was prepared by sol-gel method. Titanium tetrapropoxide and vanadium pentoxide were used as precursor of the composite catalyst and rare earth ions were used as dopant. The crystal phases, crystalline sizes, microstructure, absorption spectra of doped composite catalyst were studied by XRD, EDS, FT-IR and UV-Vis. Photoactivity of the prepared catalyst under ultraviolet irradiation were evaluated by degradation of methyl orange （MO） in aqueous solution. It is shown that the prepared catalyst is composed of anatase and futile. The rare earth ions are highly dispersed in composite catalyst. All the doped catalysts appear higher photocatalytic activity than TiO2/V2O5 catalyst and catalyst doped with Ce^4＋ present the best activity to MO.
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| 关 键 词： | TiO2/V2O5复合催化剂 稀土离子掺杂 合成 光催化活性 |
| 文章编号： | 1002-0721（2007）02-0173-06 |
| 收稿时间： | 2006-01-17 |
| 修稿时间： | 2006-06-15 |
Synthesis and Photocatalytic Activity of TiO2/V2O5 Composite Catalyst Doped with Rare Earth Ions |
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| Jianhua , Rong Yang,Songmei Li.Synthesis and Photocatalytic Activity of TiO2/V2O5 Composite Catalyst Doped with Rare Earth Ions[J].Journal of Rare Earths,2007,25(2):173-178. |
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| Authors: | Jianhua Rong Yang Songmei Li |
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| Affiliation: | aSchool of Materials Science and Engineering, Beihang University, Beijing 100083, China |
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| Abstract: | TiO2/V2O5 catalyst doped with rare earth ions was prepared by sol-gel method. Titanium tetrapropoxide and vanadium pentoxide were used as precursor of the composite catalyst and rare earth ions were used as dopant. The crystal phases, crystalline sizes, microstructure, absorption spectra of doped composite catalyst were studied by XRD, EDS, FT-IR and UV-Vis. Photoactivity of the prepared catalyst under ultraviolet irradiation were evaluated by degradation of methyl orange (MO) in aqueous solution. It is shown that the prepared catalyst is composed of anatase and rutile. The rare earth ions are highly dispersed in composite catalyst. All the doped catalysts appear higher photocatalytic activity than TiO2/V2O5 catalyst and catalyst doped with Ce4 present the best activity to MO. |
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| Keywords: | photocatalysis titanium dioxide composite catalyst rare earth ion cerium |
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