Evidence for, and an understanding of, the initial nucleation of carbon nanotubes produced by a floating catalyst method

IMR OpenIR

	Evidence for, and an understanding of, the initial nucleation of carbon nanotubes produced by a floating catalyst method
	W. C. Ren; F. Li; H. M. Cheng
	2006
发表期刊	Journal of Physical Chemistry B
ISSN	1520-6106
卷号	110 期号:34 页码:16941-16946
摘要	An understanding of the growth mechanism of carbon nanotubes (CNTs) is very important for the control of their structures, which in turn will be the basis for their further theoretical studies and applications. On the basis of high-resolution transmission electron microscopy observations of the initial nucleation of CNTs, the following deductions are made: ( 1) the nucleation of single-walled carbon nanotubes (SWNTs) and double-walled carbon nanotubes (DWNTs) starts at a low-temperature zone in front of the reaction zone; ( 2) the addition of sulfur results in localized liquid zones on the surface of big catalyst particles as the initial nucleation sites; (3) a temperature gradient is necessary to realize the role of sulfur in the structure of CNTs; and ( 4) the shell number of CNTs can be changed at the nucleation and growth stages. On the basis of the above, a growth model for the formation of SWNTs and DWNTs is proposed, which might open up the possibility of controlling the structure of CNTs.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;cheng, hm (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;cheng@imr.ac.cn
关键词	Large-scale Synthesis Diameter Distribution Molecular-dynamics Raman-scattering Growth-mechanism Metal Particles Long Ropes Single Sulfur Decomposition
URL	查看原文
WOS记录号	WOS:000239990600022
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34443
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Ren,F. Li,H. M. Cheng. Evidence for, and an understanding of, the initial nucleation of carbon nanotubes produced by a floating catalyst method[J]. Journal of Physical Chemistry B,2006,110(34):16941-16946.
APA	W. C. Ren,F. Li,&H. M. Cheng.(2006).Evidence for, and an understanding of, the initial nucleation of carbon nanotubes produced by a floating catalyst method.Journal of Physical Chemistry B,110(34),16941-16946.
MLA	W. C. Ren,et al."Evidence for, and an understanding of, the initial nucleation of carbon nanotubes produced by a floating catalyst method".Journal of Physical Chemistry B 110.34(2006):16941-16946.