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Issue 23, 2017
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Chirality-dependent growth of single-wall carbon nanotubes as revealed inside nano-test tubes

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Abstract

Growth dynamics of single-wall carbon nanotubes (SWCNTs) have been studied with nickelocene as a precursor encapsulated in the interior of template SWCNTs. By means of multi-laser Raman spectroscopy, growth curves of nine different SWCNTs, (8,8), (12,3), (13,1), (9,6), (10,4), (11,2), (11,1), (9,3) and (9,2), have been determined upon in situ annealing at various temperatures. The data reveal that the nanotubes grow through fast and slow reaction pathways with high and low activation energies, respectively. While the activation energy of the slow growth is independent of the nanotube's chiral vector, that of the fast growth exhibits a monotonic increase as the tube diameter reduces from ∼1.1 down to 0.8 nm and no dependency on the chiral angle, which can be attributed to the size-dependent properties of catalyst clusters. The chirality dependent catalytic growth properties exploited in this study provide the basis for a large-scale synthesis of single-chiral vector SWCNTs.

Graphical abstract: Chirality-dependent growth of single-wall carbon nanotubes as revealed inside nano-test tubes

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Publication details

The article was received on 15 Mar 2017, accepted on 05 May 2017 and first published on 08 May 2017


Article type: Paper
DOI: 10.1039/C7NR01846K
Citation: Nanoscale, 2017,9, 7998-8006
  • Open access: Creative Commons BY license
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    Chirality-dependent growth of single-wall carbon nanotubes as revealed inside nano-test tubes

    M. V. Kharlamova, C. Kramberger, T. Saito, Y. Sato, K. Suenaga, T. Pichler and H. Shiozawa, Nanoscale, 2017, 9, 7998
    DOI: 10.1039/C7NR01846K

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