| 空气中热氧化电沉积Zn纳米晶制备一维ZnO纳米针及其生长机制与场发射效应的研究 |
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| 引用本文： | 刘曰利,陈文,徐庆,潘春旭.空气中热氧化电沉积Zn纳米晶制备一维ZnO纳米针及其生长机制与场发射效应的研究[J].纳米科技,2007,4(3):49-55. |
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| 作者姓名： | 刘曰利 陈文 徐庆 潘春旭 |
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| 作者单位： | [1]武汉大学物理科学与技术学院,湖北武汉430072 [2]武汉理工大学材料科学与工程学院,湖北武汉430070 |
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| 摘 要： | 在金属基板表面电沉积一层金属Zn纳米晶，将该纳米晶置于高温炉中，通过热氧化法成功制备了一维ZnO纳米针。研究了不同的热氧化温度因素对一维ZnO纳米针的制备及其形貌的影响。在本方法中，一维ZnO纳米针材料对应于初始电沉积层的Zn纳米晶颗粒，这与其他方法中ZnO的生长机制不同，可以认为本方法的ZnO的生长遵从自催化扩散机制。同时，研究了一维ZnO纳米针薄膜的场发射效应。
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| 关 键 词： | ZnO纳米针 脉冲电沉积 纳米晶 热氧化法 生长机制 场发射效应 |
| 文章编号： | 1812-1918（2007）03-0049-07 |
| 修稿时间： | 2006-08-05 |
Synthesis, Growth Mechanism and Field Emission Property of Onedimensional ZnO Nanoneedles Using Thermal Oxidation Process upon an Iron Nanocrystalline Plated Layer by Pulse Plating in Air |
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| Authors: | LIU Yue-li CHEN Wen XU Qing PAN Chun-xu |
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| Affiliation: | 1.Department of Physics, Wuhan University, Wuhan 430072, China; Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | A novel method for synthesizing One-dimensional ZnO nanoneedle array was introduced, i.e., firstly, a pure zinc nanocrystalline layer was produced by using periodic reverse pulse plating process, and then the ZnO nanoneedle array grew upon the layer through thermal oxidation in air. The effect of the thermal oxidation temperature on the synthesis and morphologies of ZnO nanoneedles was investigated. The ZnO nanoneedls grew related with plated nanocrystalllne Zn, and a self-catalyzed based-up diffusion model was proposed for interpreting the nanoneedles growth mechanism. The field emission property of the nanoneedles was also studied. |
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| Keywords: | one-dimensional ZnO nanoneedle pulse plating nanocrystalline thermal oxidation growth mechanism field emission |
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