| 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,(2):96-100 |
| 磁载纳米TiO2光催化剂的制备及其光催化性能研究 |
| Study on Preparation and Photocatalytic Activity of Titania-Coated Magnetite Photocatalysts |
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| DOI： |
| 中文关键词: orange－II 磁载纳米TiO2光催化剂 光催化性能 催化活性 二氧化钛 |
| 英文关键词:Magnetic,Photocatalysts,TiO\-2,Orange\|II |
| 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. |
| 包淑娟 张校刚 刘献明 |
包淑娟(新疆大学,应用化学研究所,新疆,乌鲁木齐,830046)
;张校刚(新疆大学,应用化学研究所,新疆,乌鲁木齐,830046)
;刘献明(新疆大学,应用化学研究所,新疆,乌鲁木齐,830046)
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| 中文摘要: |
| 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. |
| 英文摘要: |
| 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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