Chiral vector and metal catalyst-dependent growth kinetics of single-wall carbon nanotubes

Author(s)
Marianna V. Kharlamova, Christian Kramberger, Yuta Sato, Takeshi Saito, Kazu Suenaga, Thomas Pichler, Hidetsugu Shiozawa
Abstract

Single-wall carbon nanotubes (SWCNTs) are synthesized by the pyrolysis of cobaltocene and nickelocene in the interior of hosting SWCNTs. In situ Raman spectroscopy elucidates growth kinetics of SWCNTs of nine different chiral vectors (8,8), (12,3), (13,1), (9,6), (10,4), (11,2), (11,1), (9,3) and (9,2) that features faster and slower growth rates. The activation energy of the faster growth increases monotonically with the SWCNT diameter, while that of the slower growth doesn't show a clear dependence, and neither of them depends on the chiral angle. At a given temperature the growth rates of the inner tubes are much higher with nickel than those with cobalt. The activation energy of the faster growth is found to be independent of the metal type, whereas that of the slower growth is metal-specific. The information obtained in the present study is elemental for a large-scale and selective synthesis of single-chirality SWCNTs that are demanded for applications. (C) 2018 Elsevier Ltd. All rights reserved.

Organisation(s)
Electronic Properties of Materials, Physics of Nanostructured Materials
External organisation(s)
National Institute of Advanced Industrial Science and Technology (AIST), Czech Academy of Sciences, National Institute of Advanced Industrial Science and Technology, Technische Universität Wien
Journal
Carbon
Volume
133
Pages
283-292
No. of pages
10
ISSN
0008-6223
DOI
https://doi.org/10.1016/j.carbon.2018.03.046
Publication date
07-2018
Peer reviewed
Yes
Austrian Fields of Science 2012
Materials physics, Nanomaterials
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/chiral-vector-and-metal-catalystdependent-growth-kinetics-of-singlewall-carbon-nanotubes(85d20c94-b946-4af2-b7a7-667bc01655d6).html