多孔氧化铝模板法制备取向碳纳米管阵列的研究进展

利用化学气相沉积技术在多孔氧化铝模板上可以制备取向碳纳米管阵列。通过调节阳极氧化参数可以改变模板的孔结构,进而可控制碳纳米管在孔道中生长的形貌。用这种方法制备的碳纳米管的直径、长度和密度可以选择性控制,这将有利于研究碳纳米管的性质和它在电化学及其他领域的应用。介绍了多孔氧化铝模板的形成原理以及碳纳米管在多孔氧化铝模板上的生长机理,讨论了阳极氧化条件、催化剂和气相沉积温度对碳纳米管特性的影响,并指出了这种技术中一些需深入研究的问题。

Advances in synthesis of aligned carbon nanotube arrays in anodic aluminum oxide templates

Chemical vapor deposition (CVD) technique based on the porous anodic aluminum oxide (AAO) template was applied in the synthesis of highly aligned carbon nanotube arrays.The channel structure of AAO,thereby the morphology of carbon nanotubes inside the channel,could be easily regulated by altering anodization parameters.Carbon nanotubes with controllable diameters,lengths and densities could be formed by this synthetic method,which would be useful for study of properties of carbon nanotubes and potential applications in electrochemistry and other fields.The principles of AAO template forming,and the growth mechanisms of carbon nanotubes in AAO templates were introduced.Effects of conditions of electrochemical anodizing process,catalyst and temperature of CVD on characteristics of carbon nanotubes were discussed.Some problems to be explored further for this method were proposed.