高度定向的碳纳米管阵列的制备

使用99．99％的铝片．在草酸溶液中，通过基于自组织基础上的二次氧化法制备了孔高度有序、六角排列的氧化铝模板，在微米尺寸区域内获得了高度平行的氧化铝纳米孔阵列。利用化学气相沉积技术(CVD)，在没有任何过渡金属催化剂的情况下，利用多孔氧化铝模板本身的催化作用，在氧化铝模板孔内成功制备了高度有序的平行碳纳米管阵列，这种碳纳米管阵列可以作为研究离子束沟道传输特性的较理想材料。利用扫描电子显微镜(SEM)和电子背散射衍射(EBSD)等测试手段对铝片、氧化铝模板和碳纳米管的结构进行了表征。讨论了氧化铝模板的形成机制和基于氧化铝模板生长高度定向碳纳米管的条件。

Preparation of highly-ordered carbon nanotube arrays in the anodized alumina template

A highly-ordered, hexagonally arranged alumina nanopore template was prepared by self-organized two-step anodization process of aluminium in oxalic acid solution. Highly parallel pores were obtained within domains of a few micrometers. Highly-ordered, parallel carbon nanotube arrays were successfully grown in the alumina template nanopores by chemical vapor deposition catalyzed by alumina itself. The nanotube arrays are suitable for channeling of particle beams. The structures of aluminium, alumina template and carbon nanotubes were characterized by scanning electron microscopy(SEM) and electron back scattered diffraction(EBSD). The growth mechanism and formation condition of both alumina template and carbon nanotube were discussed.