Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.
Adv Mater. 2010 Apr 6;22(13):1508-15. doi: 10.1002/adma.200904366.
Direct growth of single-walled carbon nanotubes (SWNTs) on flat substrates by chemical vapor deposition (CVD) is very important for the application of SWNTs in nanodevices. In the growth process, catalysts play an important role in controlling the structure of SWNTs. Over the years, we have systematically studied the size-controlled synthesis of Fe-based nanoparticles and the CVD growth of SWNTs, especially the horizontally aligned SWNTs, catalyzed by these produced nanoparticles. Some new catalysts were also developed. Among them, Cu is shown to be a superior catalyst for growing SWNT arrays on both silicon and quartz substrates and Pb is a unique catalyst from which one can obtain SWNTs without any metallic contaminant. SWNTs prepared with both Cu and Pb are very suitable for building high-performance nanodevices. These studies are also very helpful for further understanding the growth mechanism of SWNTs.
通过化学气相沉积（CVD）在平坦基底上直接生长单壁碳纳米管（SWNTs）对于 SWNTs 在纳米器件中的应用非常重要。在生长过程中，催化剂在控制 SWNTs 的结构方面起着重要作用。多年来，我们系统地研究了基于 Fe 的纳米粒子的尺寸可控合成以及由这些纳米粒子催化的 SWNTs 的 CVD 生长，特别是水平排列的 SWNTs。我们还开发了一些新的催化剂。其中，Cu 被证明是在硅和石英衬底上生长 SWNT 阵列的优异催化剂，而 Pb 是一种独特的催化剂，用其可以获得没有任何金属污染物的 SWNTs。用 Cu 和 Pb 制备的 SWNTs 非常适合构建高性能纳米器件。这些研究对于进一步理解 SWNTs 的生长机制也非常有帮助。
