有序氧化铝模板的快速制备及用于钴纳米线阵列

Rapid Preparation of Ordered Anodic Aluminum Oxide Template for the Fabrication of Co Nanowire Arrays

利用自制的氧化槽,结合恒压二次氧化的方法制备出有序的氧化铝模板,每个氧化槽每次可以制备2～4个模板,而且制备步骤简化,极大提高了氧化铝模板的制备效率.采用恒压直流电沉积方法在制备的氧化铝模板的孔中成功组装出了钴纳米线阵列,并分别用SEM、TEM、EDS对其进行了表征,结果显示,制备的钴纳米线阵列排列整齐、粗细均匀,直径约为50 nm,长度约为20～30μm,其长径比为300～1 000,与氧化铝模板的参数一致.

Ordered AAO templates are fabricated with a two-step constant-voltage anodization approach by the homemade oxidation tank. 2-4 templates could be fabricated each time by this device, and the fabrication steps are simplified. As a result, the fabrication efficiency is improved greatly by these means. Using the AAO template, Co nanowire arrays were fabricated by DC electrodeposition and were characterized by SEM, TEM, EDS. The Co nanowire arrays are parallel to each other, uniform in thickness, with diameters of 50 nm, lengths of 20-30 μm, and aspect ratios of 300 - 1 000. These parameters are in accordance with those of the AAO template.