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Investigations of mechanism of carbon nanotube growth
Author(s) -
Nasibulin A. G.,
Pikhitsa P. V.,
Queipo P.,
Choi M.,
Kauppinen E. I.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669212
Subject(s) - carbon nanotube , catalysis , carbon fibers , materials science , nanotube , nanotechnology , chemical engineering , carbon monoxide , carbon nanotube supported catalyst , chemical physics , chemistry , composite material , organic chemistry , carbon nanofiber , composite number , engineering
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)