Formation of nickel oxide nanoribbons in the cavity of carbon nanotubes

Keitaro Matsui, Bhabendra K. Pradhan, Takashi Kyotani, Akira Tomita

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74 Citations (Scopus)


An attempt was made to encapsulate nickel into the cavity of the carbon nanotubes, which were prepared by the pyrolytic carbon deposition on the nanochannels of anodic aluminum oxide film. For nickel loading, the MOCVD (metal organic chemical vapor deposition) method using nickelocene was applied to the carbon-coated nanochannels and then the nickel/carbon nanotube composites were liberated from the anodic oxide film by alkaline treatment. The resultant carbon nanotubes contained numerous numbers of NiO nanoribbons with about 4 nm thickness and 20 nm width. The length of the longest nanoribbon was about 800 nm. The crystal structure of the NiO nanoribbons was determined by using the electron diffraction technique. Furthermore, the mechanism of the nanoribbon formation was discussed in relation to the formation processes of the nickel/carbon nanotube composites.

Original languageEnglish
Pages (from-to)5682-5688
Number of pages7
JournalJournal of Physical Chemistry B
Issue number24
Publication statusPublished - 2001 Jun 21

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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