Preparation of aligned carbon nanotubes catalysed by laser-etched cobalt thin films

Mauricio Terrones Maldonado, N. Grobert, J. P. Zhang, H. Terrones, J. Olivares, W. K. Hsu, J. P. Hare, A. K. Cheetham, H. W. Kroto, D. R.M. Walton

Research output: Contribution to journalArticle

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Abstract

Pyrolysis of 2-amino-4,6-dichloro-s-triazine over laser-etched thin films of cobalt deposited on an inverted silica substrate generates aligned bundles and films of carbon nanotubes of uniform dimensions. Scanning electron microscopy, high resolution transmission electron microscopy, energy dispersive X-ray analyses, electron energy loss spectroscopy and electron diffraction studies reveal that the aligned tubes, which usually grow perpendicular to the substrate surface, are mainly straight (length ≤100 μm; 30-50 nm OD), contain traces of nitrogen (<5%) and exhibit a preferred helicity (e.g. armchair 25-30%). Other graphitic structures (e.g. polyhedral particles, encapsulated particles and amorphous carbon) are absent. Energised cobalt clusters/particles (≤50 nm), ablated during laser-etching, may condense and recrystallise evenly on the surface of the substrate as cobalt and/or cobalt oxide. These crystals apparently play a key role in nanotube production.

Original languageEnglish (US)
Pages (from-to)299-305
Number of pages7
JournalChemical Physics Letters
Volume285
Issue number5-6
DOIs
StatePublished - Mar 27 1998

Fingerprint

Carbon Nanotubes
Cobalt
cobalt
carbon nanotubes
Thin films
preparation
Lasers
Substrates
thin films
lasers
Triazines
cobalt oxides
Electron energy loss spectroscopy
Amorphous carbon
High resolution transmission electron microscopy
Electron diffraction
Silicon Dioxide
Nanotubes
bundles
pyrolysis

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Terrones Maldonado, M., Grobert, N., Zhang, J. P., Terrones, H., Olivares, J., Hsu, W. K., ... Walton, D. R. M. (1998). Preparation of aligned carbon nanotubes catalysed by laser-etched cobalt thin films. Chemical Physics Letters, 285(5-6), 299-305. https://doi.org/10.1016/S0009-2614(98)00093-1
Terrones Maldonado, Mauricio ; Grobert, N. ; Zhang, J. P. ; Terrones, H. ; Olivares, J. ; Hsu, W. K. ; Hare, J. P. ; Cheetham, A. K. ; Kroto, H. W. ; Walton, D. R.M. / Preparation of aligned carbon nanotubes catalysed by laser-etched cobalt thin films. In: Chemical Physics Letters. 1998 ; Vol. 285, No. 5-6. pp. 299-305.
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Terrones Maldonado, M, Grobert, N, Zhang, JP, Terrones, H, Olivares, J, Hsu, WK, Hare, JP, Cheetham, AK, Kroto, HW & Walton, DRM 1998, 'Preparation of aligned carbon nanotubes catalysed by laser-etched cobalt thin films', Chemical Physics Letters, vol. 285, no. 5-6, pp. 299-305. https://doi.org/10.1016/S0009-2614(98)00093-1

Preparation of aligned carbon nanotubes catalysed by laser-etched cobalt thin films. / Terrones Maldonado, Mauricio; Grobert, N.; Zhang, J. P.; Terrones, H.; Olivares, J.; Hsu, W. K.; Hare, J. P.; Cheetham, A. K.; Kroto, H. W.; Walton, D. R.M.

In: Chemical Physics Letters, Vol. 285, No. 5-6, 27.03.1998, p. 299-305.

Research output: Contribution to journalArticle

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AU - Terrones Maldonado, Mauricio

AU - Grobert, N.

AU - Zhang, J. P.

AU - Terrones, H.

AU - Olivares, J.

AU - Hsu, W. K.

AU - Hare, J. P.

AU - Cheetham, A. K.

AU - Kroto, H. W.

AU - Walton, D. R.M.

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