通过对纯铝板电化学阳极氧化及腐蚀液处理, 在一定的条件下制备出了排布有序的Al2O3纳米线, 采用SEM、EDS、IR手段对纳米线微观形貌和组成进行了表征. 实验结果表明: 多孔Al2O3薄膜经腐蚀后形成纳米线,在铝基板上呈六角形排布, 组成为纯Al2O3, 直径随电氧化温度、槽电压的升高和腐蚀处理时间的延长减小, 直径范围为16~60nm, 长径比较大. 在实验的基础上, 提出了有序排布Al2O3纳米线的形成机理.
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.
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