Analysis of effluent gases during the CCVD growth of multi-wall carbon nanotubes from acetylene

被引：38
作者：
Schmitt, T. C. [1 ]
Biris, A. S.
Miller, D. W.
Biris, A. R.
Lupu, D.
Trigwell, S.
Rahman, Z. U.
机构：
[1] Natl Ctr Toxicol Res, Jefferson, AR 72079 USA
[2] Univ Arkansas, Grad Inst Technol, Ctr Nanotechnol, Little Rock, AR 72204 USA
[3] Natl Inst Res & Dev Isotop & Mol Technol, R-400293 Cluj Napoca, Romania
[4] Electrostat & Surface Phys Lab, Kennedy Space Ctr, FL 32899 USA
[5] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Orlando, FL 32826 USA
来源：
CARBON | 2006年 / 44卷 / 10期
关键词：
catalytic chemical vapor deposition; carbon nanotubes; thermodynamic analysis; chromatography;
D O I：
10.1016/j.carbon.2006.01.008
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：
Catalytic chemical vapor deposition was used to grow multi-walled carbon nanotubes on a Fe:Co:CaCO3 catalyst from acetylene. The influent and effluent gases were analyzed by gas chromatography and mass spectrometry at different time intervals during the nanotubes growth process in order to better understand and optimize the overall reaction. A large number of byproducts were identified and it was found that the number and the level for some of the carbon byproducts significantly increased over time. The CaCO3 catalytic support thermally decomposed into CaO and CO2 resulting in a mixture of two catalysts for growing the nanotubes, which were found to have outer diameters belonging to two main groups 8-35 nm and 40-60 nm, respectively. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2032 / 2038
页数：7
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