| 制备方法对纳米TiO2光催化活性的影响 |
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| 引用本文： | 文桂林,高原,刘惠涛.制备方法对纳米TiO2光催化活性的影响[J].环境科学与技术,2006,29(9):19-21. |
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| 作者姓名： | 文桂林 高原 刘惠涛 |
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| 作者单位： | 兰州大学化学化工学院,兰州,730000;兰州大学化学化工学院,兰州,730000;兰州物理所真空与低温国家重点实验室,兰州,730000 |
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| 基金项目： | 兰州大学校科研和教改项目
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武器装备预研基金 |
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| 摘 要： | 分别用化学沉淀法、溶胶-凝胶法和微乳液法制备了纳米级TiO2粉体。用XRD、TEM、TG-DTA对其进行了研究与表征,以次甲基兰溶液的光催化降解为模型反应,考察了制备方法对粉体的晶型、形貌、粒径及其光催化活性的影响。结果表明:从工业化生产目的出发,在相近实验条件下,化学沉淀法制备的TiO2粉体颗粒均匀、粒径小、光催化能力强,产品综合性能最好。此项研究在光催化剂应用领域具有一定的理论和实际意义。
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| 关 键 词： | 光催化 TiO2 化学沉淀法 溶胶-凝胶法 微乳液法 |
| 文章编号： | 1003-6504(2006)09-0019-03 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-12-01 |
Effect of Different Preparation Methods on Photocatalytic Activity of Nano-TiO2 Powders |
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| WEN Gui-lin,GAO Yuan,LIU Hui-tao.Effect of Different Preparation Methods on Photocatalytic Activity of Nano-TiO2 Powders[J].Environmental Science and Technology,2006,29(9):19-21. |
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| Authors: | WEN Gui-lin GAO Yuan LIU Hui-tao |
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| Abstract: | Nano-TiO2 powder was prepared by method of chemical precipitation, sol-gel and microemulsion respectively. Different preparation methods caused morphological and structural changes, which were followed by X-ray diffraction (XRD), transmission electron microscope (TEM) and thermal gravimetric and differential thermal analyser (TG-DTA). Examination of the photocatalytic activity of TiO2 particles prepared by different methods in the photodegradation reaction of methylene blue solution under irradiation by visible light demonstrated that TiO2 powders from chemical precipitation method were superior to the others on photocatalytic activity. |
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| Keywords: | photocatalysis TiO2 chemical precipitation method sol-gel method microemulsion method |
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