Investigations of mechanism of carbon nanotube growth

Studies on the formation of single‐walled carbon nanotubes by an aerosol method based on the introduction of pre‐formed catalyst particles into conditions leading to carbon nanotube synthesis are presented. Carbon monoxide and iron nanoparticles were used as carbon source and catalyst, respectively....

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Bibliographic Details
Published in:Physica Status Solidi (b) 2006-11, Vol.243 (13), p.3095-3100
Main Authors: Nasibulin, A. G., Pikhitsa, P. V., Queipo, P., Choi, M., Kauppinen, E. I.
Format: Article
Language:English
Subjects:
61.46.Fg
73.20.Hb
81.07.De
Catalytic methods
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Methods of nanofabrication
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Physics
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Summary:Studies on the formation of single‐walled carbon nanotubes by an aerosol method based on the introduction of pre‐formed catalyst particles into conditions leading to carbon nanotube synthesis are presented. Carbon monoxide and iron nanoparticles were used as carbon source and catalyst, respectively. The carbon nanotube growth was found to occur at a temperature of around 900 °C in the heating section of the reactor with a growth rate exceeding 1.1 µm/s. A detailed analysis of possible processes during carbon nanotube formation revealed heptagon transformation as a limiting stage. A mechanism for carbon nanotube formation on the basis of the geometrical consideration was proposed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.200669212