Effect of catalyst composition on carbon nanotube growth

被引：82

作者：

Liao, XZ ^{[1
]}

Serquis, A

Jia, QX

Peterson, DE

Zhu, YT

Xu, HF

机构：

[1] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

[2] Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 16期

关键词：

D O I：

10.1063/1.1569655

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Transmission electron microscopy was used to probe the compositions of individual Co-Mo bimetal catalyst particles and the morphologies of carbon nanotubes (CNTs) catalyzed by these particles under flowing carbon monoxide at 700 degreesC. It was found that the composition of the catalyst particle at a CNT tip and the distribution of Co within the particle largely determine the morphology of the CNT. A particle with low Co content (<15 at. %) tends to produce a long CNT, while a particle with very high Co content (>85 at. %) tends to produce onion-like structures. These observations provide insight into the CNT growth mechanisms. (C) 2003 American Institute of Physics.

引用

页码：2694 / 2696

页数：3

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