| 纳米二氧化钛的制备及其光催化性能 |
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| 引用本文： | 杜锦阁,姚朝宗.纳米二氧化钛的制备及其光催化性能[J].化学研究,2012,23(4):78-80. |
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| 作者姓名： | 杜锦阁 姚朝宗 |
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| 作者单位： | 新乡医学院 三全学院,河南新乡,453003 |
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| 摘 要： | 分别采用水热法和溶胶-凝胶法制备了TiO2纳米粉体;利用X射线衍射仪和扫描电镜分析了两种方法制备的TiO2粉体的形貌和晶体结构,并测定了纳米TiO2粉体对罗丹明B的光催化降解活性.结果表明:采用水热法制备的TiO2纳米粉体含有锐钛矿相和金红石相,粒径较小,大约为50nm,而且分散均匀,光催化性能良好;采用溶胶-凝胶法制备的TiO2粉体经过550℃煅烧后仍然为锐钛矿相,而且粒径较大,大约为80nm.
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| 关 键 词： | 溶胶-凝胶法 TiO2 混晶 光催化活性 |
Preparation and photocatalytic properties of nano-titania |
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| DU Jin-ge
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YAO Chao-zong.Preparation and photocatalytic properties of nano-titania[J].Chemical Research,2012,23(4):78-80. |
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| Authors: | DU Jin-ge YAO Chao-zong |
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| Institution: | ( Sanquan College, Xinxiang Medical University, Xinxiang 453003, Henan, China) |
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| Abstract: | Nano-TiO2 particulates were prepared by hydrothermal method and sol-gel method,respectively.The morphology and crystalline structure of as-prepared nano-TiO2 were analyzed by X-ray diffraction and scanning electron microscopy.Their photocatalytic activity was evaluated in relation to photocatalyzed degradation of Rhodamine B at room temperature.Results indicate that nano-TiO2 catalyst synthesized by hydrothermal method consists of anatase and rutile phases with a smaller size of about 50 nm,and it has good photocatalytic activity.Besides,nano-TiO2 prepared by sol-gel method consists of anatase phase alone after calcination at 550 ℃,and it has a larger size of about 80 nm. |
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| Keywords: | hydrothermal method sol-gel method nano-TiO2 photocatalytic activity |
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