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高质量规则多孔氧化铝模板的制备
引用本文:马春兰.高质量规则多孔氧化铝模板的制备[J].物理学报,2004,53(6):1952-1955.
作者姓名:马春兰
作者单位:苏州科技学院应用物理系;苏州 215009
基金项目:苏州科技学院青年教师基金资助的课题.
摘    要:在合适的条件下利用阳极氧化高纯铝片,可以获得多孔结构的氧化铝,其孔径大小和排列方式都很均匀.由于孔的深度不受限制,因此可以制备出孔深很大的多孔氧化铝.这种多孔结构可以用作制备纳米材料的模板.利用0.3mol/L的草酸溶液在40V的直流电压下,采用二步氧化法获得了高质量的氧化铝多孔模板,其典型孔径值为40—70nm,孔间距约110nm,深度可达毫米量级.分析了溶液温度对结果的影响,比较了单步法和两步法获得的样品的多孔结构,认为低温下的二步氧化法可以获得很好的多孔氧化铝模板. 关键词: 纳米材料 多孔氧化铝 二步氧化法

关 键 词:纳米材料  多孔氧化铝  二步氧化法
文章编号:1000-3290/2004/53(06)/1952-04
收稿时间:8/4/2003 12:00:00 AM

The fabrication of high-quality periodic porous alumina templates
Ma Chun-Lan.The fabrication of high-quality periodic porous alumina templates[J].Acta Physica Sinica,2004,53(6):1952-1955.
Authors:Ma Chun-Lan
Abstract:Porous alumina films can be achieved by anodizing an ultra pure aluminum sheet in proper conditions. Both the distribution and the size of the pores are regular. The depths of the pores are uniquely limited by the anodization time thus very deep pores can be obtained, in the order of mm. Such a porous structure can be employed to serve as the templates for nano sized materials. The Oxalic acid of 0.3mol/L was used in our experiments with the applied DC voltage 40 V. The two-step method was involved to fabricate the templates. The resultant templates exhibit regular porous section. The pore size is ~40—70 nm and the pore-pore spacing is~110 nm. The depth is~0.4 mm. The dependence of the template quality on the solution (oxalic acid) temperature was analyzed and the comparison between the single-step and two-step anodization was made. The results indicate that low solution temperature and two-step method are necessary.
Keywords:Nano-material  porous alumina  two-step anodization
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