Effect of alcohol sources on synthesis of single-walled carbon nanotubes

被引：18

作者：

Oida, Satoshi ^{[1
]}

Sakai, Akira ^{[2
]}

Nakatsuka, Osamu ^{[1
]}

Ogawa, Masaki ^{[3
]}

Zaima, Shigeaki ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Osaka Univ, Grad Sch Engn, Osaka 5608531, Japan

[3] Nagoya Univ, Ecotopia Sci Inst, Nagoya, Aichi 4648603, Japan

来源：

APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 23期

关键词：

hot-filament chemical vapor deposition; single-walled carbon nanotubes; alcohol; radical CVD;

D O I：

10.1016/j.apsusc.2008.01.151

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：

The effect of oxidant species forming an alcohol molecule for hot-filament chemical vapor deposition (HFCVD) on single-walled carbon nanotubes (SWCNTs) growth has been investigated. To use a graphite rod as a filament for HFCVD to decompose alcohol sources, contamination-free sample surface can be obtained and SWCNTs are successively and densely grown at a lower temperature than those by conventional thermal CVD. It is found that the higher the molecule number of alcohol among CH3OH, C2H5OH, and 2-C3H7OH is, the lower the initial growth rate of SWCNTs is. As for CH3OH, diameter distribution of SWCNTs is dynamically changed with the growth time passed, and a negative growth rate is observed at the later stage of growth. The growth kinetics depending on the alcohol sources is discussed on the basis of a capability of the oxidant species to burn away SWCNTs and deactivation of Co catalysts used for the growth. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：7697 / 7702

页数：6

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