Synthesis of multi-walled C nanotubes by Fe-Ni (70 wt.%) catalyzed chemical vapor deposition from pre-heated CH4

被引：17

作者：

Altay, Melek Cumbul ^{[1
]}

Eroglu, Serafettin ^{[1
]}

机构：

[1] Istanbul Univ, Fac Engn, Dept Met & Mat Engn, TR-34320 Istanbul, Turkey

来源：

MATERIALS LETTERS | 2012年 / 67卷 / 01期

关键词：

Carbon nanotubes; Chemical vapor deposition; Pre-heating; Methane; CARBON NANOTUBES; NICKEL; GROWTH;

D O I：

10.1016/j.matlet.2011.09.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study aims to investigate effect of pre-heating of pure CH4 on the growth of C nanotubes by chemical vapor deposition in the presence of Fe-Ni (70 wt.%) alloy catalyst. It was observed that un-preheated CH4 yielded no C formation at 1050-1150 K owing to its poor decomposition rate, contrary to the results of thermodynamic analysis. Whereas, pre-heating treatment of CH4 at 1200 K prior to the growth increased pyrolysis of the hydrocarbon which promoted synthesis of C nanotubes at 1050-1150 K, possibly due to enhanced formations of intermediate gaseous species. TEM study revealed that the morphologies of the products consist of multi-walled C nanotubes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：124 / 127

页数：4

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