Effect of catalyst particle interspacing on the growth of millimeter-scale carbon nanotube arrays by catalytic chemical vapor deposition

被引：30

作者：

Cui, Xinwei ^{[1
]}

Wei, Weifeng ^{[1
]}

Harrower, Christopher ^{[1
]}

Chen, Weixing ^{[1
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2G6, Canada

来源：

CARBON | 2009年 / 47卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ARCHITECTURES; MECHANISM; EMISSION; DIAMETER; KINETICS; FILM;

D O I：

10.1016/j.carbon.2009.08.011

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：

Vertically aligned millimeter-scale carbon nanotube (CNT) arrays have been successfully deposited on both Fe(3 nM)/Al2O3 and Fe(1 nm)/Al2O3 catalyst films under different optimum pretreatment conditions by catalytic chemical vapor deposition. By investigating the catalyst particles before CNT array growth, it has been found that inter-particle spacing plays a significant role in influencing CNT array height, CNT diameter and wall number in the present study The growth kinetics of CNT arrays grown from the two catalyst films with different pretreatment conditions demonstrates a competitive lengthening-thickening process. Based on the kinetics studies, it has been proved that inter-particle spacing affects the CNT array height by affecting their lengthening time, and accordingly affects the diameter and wall number of CNTs because of the concurrent change in the thickening time. (c) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3441 / 3451

页数：11

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