Diameter control of single-walled carbon nanotubes
Diameter control of single-walled carbon nanotubes
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DOI：
10.1016/s0008-6223(00)00090-7
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发表时间：
2000-01-01
期刊：
影响因子：
10.9
通讯作者：
Achiba, Y
中科院分区：
文献类型：
--
作者：
Kataura, H;Kumazawa, Y;Achiba, Y
利用激光加热炉技术，在NiCo、RhPt和RhPd催化剂上选择性地制备了单壁碳纳米管。尤其是RhPd催化剂可以高产率地制备出非常薄的单壁碳纳米管。在这项工作中，我们研究了每种催化剂的炉温依赖关系，以更严格地控制单壁碳纳米管的直径。此外，我们还考察了气体流速对单壁碳纳米管生长时间的影响。当HOW速度从1.2m m/S改变到12m m/m in时，得到的单壁碳纳米管的直径分布发生了显著的变化。这一结果表明，单壁碳纳米管的成核和生长速度比富勒烯的形成要慢得多。利用单壁碳纳米管的缓慢生长特性，有可能进一步控制其直径。(C)2000爱思唯尔科学有限公司。保留所有权利。
Laser furnace technique has been used for diameter selective formation of single-walled carbon nanotubes (SWNTs) using NiCo, RhPt and RhPd catalysts. Particularly RhPd catalyst can produce very thin SWNTs in high yield. In this work, we investigated the furnace temperature dependence for each catalyst to control the diameter of SWNTs more strictly. Further, we investigated the effect of the gas flow velocity to see the growth time of SWNTs. When the how velocity was changed from 1.2 to 12 mm/s, the diameter distributions of the SWNTs obtained were changed significantly. This result suggests that the nucleation and the growth of SWNTs are much slower than the fullerene formation. Using the slow growth nature of SWNTs, there is a possibility of further diameter control of SWNTs. (C) 2000 Elsevier Science Ltd. All rights reserved.