| 磁载纳米TiO2光催化剂的制备及其光催化性能研究 |
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| 引用本文： | 包淑娟,张校刚,刘献明. 磁载纳米TiO2光催化剂的制备及其光催化性能研究[J]. 分子催化, 2003, 17(2): 96-100 |
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| 作者姓名： | 包淑娟 张校刚 刘献明 |
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| 作者单位： | 新疆大学,应用化学研究所,新疆,乌鲁木齐,830046 |
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| 基金项目： | 国家自然科学基金委 (No.50143023) 及中科院"西部之光"资助项目. |
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| 摘 要： | 采用肼((NH2)2*H2O)还原硝酸铁(Fe(NO3)3)法制备纳米级磁基体(Fe3O4), 以聚乙二醇对其表面进行改性, 通过溶胶-凝胶法制得TiO2/Fe3O4磁载纳米TiO2光催化剂, 并用于光催化降解橙黄-II, 对其活性进行评价. 结果表明 TiO2/Fe3O4光催化剂的降解率在第一次使用时与纯TiO2相近, 三次循环使用后, 仍能保持较高的催化活性. 催化剂的最佳用量为4 g/L, 在酸性和碱性环境中均能保持很好的催化活性.
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| 关 键 词： | orange－II 磁载纳米TiO2光催化剂 光催化性能 催化活性 二氧化钛 |
| 文章编号： | 1001-3555(2003)02-0096-05 |
Study on Preparation and Photocatalytic Activity of Titania-Coated Magnetite Photocatalysts |
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| BAO Shu|juan,ZHANG Xiao|gang+{},LIU Xian|ming. Study on Preparation and Photocatalytic Activity of Titania-Coated Magnetite Photocatalysts[J]. Journal of Molecular Catalysis (China), 2003, 17(2): 96-100 |
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| Authors: | BAO Shu|juan ZHANG Xiao|gang+{} LIU Xian|ming |
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| Affiliation: | BAO Shu|juan,ZHANG Xiao|gang+{1)},LIU Xian|ming |
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| Abstract: | Nano|magnetite matrix Fe-3O-4 was prepared by hydrous reduction of ferric nitrate in the presence of polyethylene glycol (PEG). TiO-2/ Fe-3O-4 has been successfully prepared by sol|gel method. The photocatalytic activity of this catalyst was tested with Orange|II as decomposition substance. The results show that TiO-2/ Fe-3O-4 have a good photocatalytic activity after being used three times and its effect is similar to that of pure TiO-2 in the first using. An optimized concentration of the catalyst in solution was found at 4 g/L and the degradation of Orange|II solution is concerned in the range of pH=2~12. |
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| Keywords: | Magnetic Photocatalysts TiO-2 Orange|II |
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