Growth of carbon nanotubes and nanofibres in porous anodic alumina film

被引:66
作者
Sui, YC
Cui, BZ
Guardián, R
Acosta, DR
Martínez, L
Perez, R
机构
[1] Inst Mexicano Petr, Coordinac Programa Invest & Desarrollo Ductos, Mexico City 07730, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Ctr Instrumentos, Mexico City 04510, DF, Mexico
[3] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico
[4] Univ Nacl Autonoma Mexico, Ctr Ciencias Fis, Cuernavaca 62251, Morelos, Mexico
关键词
carbon fibers; carbon nanotubes; chemical vapor deposition; transmission electron microscopy;
D O I
10.1016/S0008-6223(01)00230-5
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
By acetylene pyrolysis at 650 and 550degreesC, carbon nanotubes were synthesized successfully in porous alumina templates anodized in sulfuric and/or oxalic acid solution. For templates anodized in oxalic acid followed by boiling in distilled water, thermal decomposition of acetylene at 650degreesC in the pores results in the formation of carbon nanofibres. For templates anodized in sulfuric acid, only carbon nanotubes were formed, even if boiling in water was adopted to process it. This indicates that the modifications of the catalytic effects in acetylene pyrolysis by boiling in water are different to for these two types of templates. All the carbon nanotubes and nanofibres have similar lattice structures under HRTEM examination. No carbon nanotubes or nanofibres can be formed when the chemical vapour deposition temperature decreases to 500degreesC. (C) 2002 Published by Elsevier Science Ltd.
引用
收藏
页码:1011 / 1016
页数:6
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