In situ observation of the growth mechanisms of carbon nanotubes under diverse reaction conditions

We report in situ environmental transmission electron microscope observations of the nucleation and growth of multi-wall and single-wall carbon nanotubes formed by the catalytic decomposition of acetylene (C2H2) on Ni/SiO2 catalyst. The growth rate, structure and morphology of the carbon nanotubes f...

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Bibliographic Details
Published in:Journal of electron microscopy 2005-06, Vol.54 (3), p.231-237
Main Authors: Sharma, Renu, Rez, Peter, Treacy, Michael M. J., Stuart, Steven J.
Format: Article
Language:English
Subjects:
Carbon nanotubes
catalyst
chemical vapor deposition
environmental transmission electron microscope
growth mechanisms
in situ
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Summary:We report in situ environmental transmission electron microscope observations of the nucleation and growth of multi-wall and single-wall carbon nanotubes formed by the catalytic decomposition of acetylene (C2H2) on Ni/SiO2 catalyst. The growth rate, structure and morphology of the carbon nanotubes formed depended upon reaction temperature and pressure. Under 20–100 mTorr of gas pressures at 480°C, serpentine-shaped or zigzag, multi-wall carbon nanotubes grew at an average rate of 35–40 nm sec−1. At pressures
ISSN:0022-0744
1477-9986
2050-5701
DOI:10.1093/jmicro/dfi037