| 双元素掺杂纳米TiO2光催化降解亚甲基蓝的研究 |
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| 引用本文： | 计兵,杨金田.双元素掺杂纳米TiO2光催化降解亚甲基蓝的研究[J].菏泽学院学报,2006,28(5):81-84. |
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| 作者姓名： | 计兵 杨金田 |
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| 作者单位： | 湖州师范学院生命科学学院化学系,浙江湖州,313000 |
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| 摘 要： | 以浸渍法、共沉淀法和溶胶-凝胶法制备得到了双元素钕和铁掺杂的纳米TiO2光催化剂,考察了它们对光降解亚甲基蓝的催化活性.结果表明,亚甲基蓝的光催化降解可用假一级动力学方程表示.以一定比例掺杂钕、铁离子可提高TiO2的光催化活性,尤其是在自然光下TiO2的光催化活性.在一定比例钕、铁掺杂后,共沉淀法制备的掺杂型TiO2的光催化活性接近于用溶胶-凝胶法制备的掺杂型TiO2.
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| 关 键 词： | 二氧化钛 掺杂 光催化降解 钕 铁 降解动力学 亚甲基蓝 |
| 文章编号： | 1673-2103（2006）05-0081-04 |
| 收稿时间： | 2006-04-08 |
| 修稿时间： | 2006年4月8日 |
A Study on Photocatalytic Degradation Activity of Methylthionine chloride on Nanoparticle TiO2 Doped Double Elements |
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| JI Bing,YANG Jin-Tian.A Study on Photocatalytic Degradation Activity of Methylthionine chloride on Nanoparticle TiO2 Doped Double Elements[J].Journal of Heze University,2006,28(5):81-84. |
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| Authors: | JI Bing YANG Jin-Tian |
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| Institution: | Chemistry Department, Faculty of Life Science, Huzhou Teachers College, Huzhou, Zhejiang 31300, China |
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| Abstract: | Nanoparticle TiO_2 doped by neodymium and iron elements are prepared by soak,coprecipitation,and sol-gel method.The photocatalytic activity of methylthionine chloride on Nanoparticle TiO_2 doped was investigated.The results showed that the photolysis fit a first-order kinetic relationship well.The photolysis rate constant of imidacloprid decreased with increasing initial concenteation,which was explained by tow mechanisms of photocatalytic degradation.The photocatalytic activities of TiO_2 were enhanced due to the addition of Fe~(3 ) and Nd~(3 )into TiO_2,especially under the sunlight.In addition,the photocatalytic activity of TiO_2 doped by Fe~(3 ) and Nd~(3 ) prepared using coprecipitation was close to that prepared using sol-gel method. |
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| Keywords: | TiO_2 dopant photocatalytic drgradation neodymium iron dymamics methylthionine chloride |
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