| 由纳米管和纳米颗粒构成的TiO2膜的制备与机理研究 |
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| 引用本文： | 杨笛,王义全,任国斌,冯帅,陈媛媛,王文忠.由纳米管和纳米颗粒构成的TiO2膜的制备与机理研究[J].化学物理学报,2012,25(1):91-95. |
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| 作者姓名： | 杨笛 王义全 任国斌 冯帅 陈媛媛 王文忠 |
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| 作者单位： | 中央民族大学理学院，北京100081;中央民族大学理学院，北京100081;中央民族大学理学院，北京100081;中央民族大学理学院，北京100081;北京工商大学计算机与信息工程学院，北京100048;中央民族大学理学院，北京100081 |
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| 基金项目： | This work was supported by the Fundamental Re-search Funds for the Central Universities, the Key Construction Program of the National “985” Project (No.98503-008006 and No.98503-008017) and “211 project” of Ministry of Education of China. |
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| 摘 要： | 采用聚苯乙烯小球修饰Ti片表面，并进行阳极氧化，制备出一种由纳米颗粒和纳米管构成的TiO2膜．通过数值模拟，分析了氧化表面附近的局部电场分布对TiO2膜形貌的影响．结果表明，覆盖物增强了局部电场，从而加快了O2-与Ti的反应速率，有利于TiO2的生长；与此同时，TiF6]6-的扩散受到阻碍，使得TiO2的溶解速率减慢．可见，覆盖物打破了TiO2纳米管形成的平衡条件，导致纳米颗粒的生成．此外，通过X射线衍射和Raman光谱的测试分析发现，所制备的TiO2为锐钛矿结构.
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| 关 键 词： | 阳极氧化，TiO2膜，纳米管 |
| 收稿时间： | 2011/8/24 0:00:00 |
Formation Mechanistism Study of TiO2 Film Comprising Nanotubes and Nanoparticles |
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| Di Yang,Yi-quan Wang,Guo-bin Ren,Shuai Feng,Yuan-yuan Chen and Wen-zhong Wang.Formation Mechanistism Study of TiO2 Film Comprising Nanotubes and Nanoparticles[J].Chinese Journal of Chemical Physics,2012,25(1):91-95. |
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| Authors: | Di Yang Yi-quan Wang Guo-bin Ren Shuai Feng Yuan-yuan Chen and Wen-zhong Wang |
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| Institution: | College of Science, Minzu University of China, Beijing 100081, China;College of Science, Minzu University of China, Beijing 100081, China;College of Science, Minzu University of China, Beijing 100081, China;College of Science, Minzu University of China, Beijing 100081, China;College of Computer and Information Engineering, Technology and Business University, Beijing 100048, China;College of Science, Minzu University of China, Beijing 100081, China |
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| Abstract: | A novel titanium dioxide (TiO2) film comprising both nanotubes and nanopaticles was fab-ricated by an anodization process of the modified titanium. The local electric field at the anodized surface was simulated and its influence on the morphology of the TiO2 film was discussed. The results show that the electric field strength is enhanced by the covering. The growth rate of TiO2 increases with the assist of the local electric field. However, TiO2 dis-solution is hindered since the local electric field prevents TiF6]6- from diffusing. It means that the balance condition for the formation of nanotubes is broken, and TiO2 nanoparticles are formed. Moreover, the crystal structure of the TiO2 film was confirmed using X-ray diffraction and Raman analysis. The anatase is a main phase for the proposed film. |
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| Keywords: | Anodization TiO2 film Nanotube |
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