How Catalysts Affect the Growth of Single-Walled Carbon Nanotubes on Substrates
How Catalysts Affect the Growth of Single-Walled Carbon Nanotubes on Substrates
复制标题
催化剂如何影响单壁碳纳米管在基材上的生长
DOI：
10.1002/adma.200904366
复制
发表时间：
2010-04-06
影响因子：
29.4
通讯作者：
Liu, Jie
中科院分区：
文献类型：
--
作者：
Li, Yan;Cui, Rongli;Liu, Jie
采用化学气相沉积法(CVD)在平板衬底上直接生长单壁碳纳米管(SWNTs)对其在纳米器件中的应用具有重要意义。在生长过程中，催化剂对单壁碳纳米管的结构起着重要的控制作用。多年来，我们系统地研究了尺寸可控的铁基纳米颗粒的合成及其催化的单壁碳纳米管的CVD生长，特别是水平排列的单壁碳纳米管。还开发了一些新的催化剂。其中，铜是在硅和石英衬底上生长单壁碳纳米管阵列的优良催化剂，铅是一种独特的催化剂，可以在不产生任何金属污染的情况下获得单壁碳纳米管。同时使用铜和铅制备的单壁碳纳米管非常适合构建高性能的纳米器件。这些研究也有助于进一步了解单壁碳纳米管的生长机制。
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.