Al2O3纳米线的电化学法制备及形成机理分析
收稿日期: 2009-12-17
修回日期: 2010-03-09
网络出版日期: 2010-07-19
基金资助
国家自然科学基金(20676088); 国家高技术研究发展计划(863计划)项目(2006AA05Z139)
Preparation and Formation Mechanism of Al2O3 Nanowires by Electrochemical Oxidation Process
Received date: 2009-12-17
Revised date: 2010-03-09
Online published: 2010-07-19
池永庆, 陈 旭, 刘世斌, 张忠林, 段东红, 李一兵, 郝晓刚 . Al2O3纳米线的电化学法制备及形成机理分析[J]. 无机材料学报, 2010 , 25(8) : 851 -856 . DOI: 10.3724/SP.J.1077.2010.00851
Al2O3 nanowires were prepared with the method of electrochemical oxidation followed by acid corrosion. The morphology and structure of Al2O3 nanowires were characterized by SEM, EDS and IR. The experimental results show that Al2O3 nanowires with hexagonal arrangement and large aspect ratio are formed from Al2O3 porous film by electro-oxidation of aluminum substrate. The diameter of the pure Al2O3 nanowires is from 16nm to 60nm, and decreases with the rising of electrolyte temperature, cell voltage and the prolonging of corrosion time. On the basis of characterization of nanowires on Al2O3 porous film, a possible formation mechanism was proposed.
Key words： Al2O3 nanowires; electro-oxidation; preparation; mechanism
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