| 磁载纳米二氧化钛光催化剂的制备及光催化性能 |
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| 引用本文： | 王继库,陈浩,赵丽娜,王春莲,徐占林.磁载纳米二氧化钛光催化剂的制备及光催化性能[J].化学世界,2013,54(1):8-11. |
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| 作者姓名： | 王继库 陈浩 赵丽娜 王春莲 徐占林 |
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| 作者单位： | 吉林师范大学化学学院,吉林四平,136000 |
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| 基金项目： | 国家自然科学基金资助(21077041) |
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| 摘 要： | 以共沉淀法制备纳米级Fe3O4磁载体,以SiO2为过渡层,通过溶胶-凝胶法制得包覆型光催化剂TiO2/SiO2/Fe3O4复合粒子。通过TEM、XRD、IR等测试手段对样品进行表征。以甲基橙为目标降解物,考察磁载光催化剂TiO2/SiO2/Fe3O4在紫外光下的光催化活性。结果表明,在TiO2和Fe3O4之间包覆一层无定型SiO2的TiO2/SiO2/Fe3O4的光催化活性明显优于纯TiO2和TiO2/Fe3O4的光催化活性,且具有较好的磁性,在有外加磁场时可将催化剂从溶液中分离出来,回收处理后循环使用。
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| 关 键 词： | 磁性 TiO2/SiO2/Fe3O4 光催化 甲基橙 |
Preparation and Photocatalytic Properties of Magnetic Nanosized Titanium Dioxide |
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| WANG Ji-ku,CHEN Hao,ZHAO Li-na,WANG Chun-lian,XU Zhan-lin.Preparation and Photocatalytic Properties of Magnetic Nanosized Titanium Dioxide[J].Chemical World,2013,54(1):8-11. |
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| Authors: | WANG Ji-ku CHEN Hao ZHAO Li-na WANG Chun-lian XU Zhan-lin |
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| Affiliation: | (College of Chemistry,Jilin Normal University,Jilin Siping 136000,China) |
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| Abstract: | Nanosized Fe3O4 particles were prepared by coprecipitation method.Using the prepared Fe3O4 particles as nucleus and SiO2 as shell,TiO2/SiO2/Fe3O4 coated particles were prepared by sol-gel method.The composite particles were characterized by IR,XRD and TEM.The photocatalytic activity of TiO2/SiO2/Fe3O4 was studied by the photodegradation of methyl orange under UV-light.The results indicated that the photocatalytic activity of TiO2/SiO2/Fe3O4 coated particles was higher than pure TiO2 and TiO2/ Fe3O4 without SiO2 coating.The composite particles had good magnetic property,so when there was an additional magnetic field,they could be separated from the solution.After being retrieved they could be reased. |
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| Keywords: | magnetic TiO2/ SiO2/Fe3O4 photocatalysis methyl orange |
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