A catalytic chemical vapor deposition synthesis of double-walled carbon nanotubes over metal catalysts supported on a mesoporous material

被引:72
作者
Zhu, J
Yudasaka, M
Iijima, S
机构
[1] NEC Corp Ltd, Japan Sci & Technol Corp, Carbon Nanotube Project, Tsukuba, Ibaraki 3058501, Japan
[2] Meijo Univ, Dept Phys, Tempaku Ku, Nagoya, Aichi 4688502, Japan
关键词
D O I
10.1016/j.cplett.2003.09.049
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Double-walled carbon nanotubes (DWNTs) have been synthesized by catalytic chemical vapor deposition (CCVD) over supported metal catalysts decomposed from Fe(CH3COO)(2) and Co(CH3COO)(2) on mesoporous silica. Bundles of tubes with relatively high percentage of DWNTs, in areas where tubular layered structures could be clearly resolved, have been observed by transmission electron microscopy (TEM). In other areas, crystal-like alignment of very uniform DWNTs was observed for the first time, suggesting that mesoporous silica might play a templating role in guiding the initial nanotube growth. In addition, compatible with nano-electronics research, bridging of catalytic islands by DWNTs has also been demonstrated. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:496 / 502
页数:7
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