Control of hole opening in single-wall carbon nanotubes and single-wall carbon nanohorns using oxygen

Jing Fan, Masako Yudasaka, Jin Miyawaki, Kumiko Ajima, Katsuyuki Murata, Sumio Iijima

Research output: Contribution to journalArticlepeer-review

109 Citations (Scopus)

Abstract

Due to the simplicity of the process, holes in the graphene walls of single-wall carbon nanotubes (SWNTs) and single-wall carbon nanohorns (SWNHs) have often been opened using O: gas at high temperatures, even though this contaminates the nanotubes with carbonaceous dust (C-dust). To open holes with less C-dust contamination, we found that a slow temperature increase of 1°C/min or less, in air, was effective. We also found that SWNHs having little C-dust could store a large quantity of materials inside the tubes. We infer that the local temperature increase due to the exothermic reaction of combustion may have been suppressed in the slow combustion process, which was effective in reducing the C-dust.

Original languageEnglish
Pages (from-to)1587-1591
Number of pages5
JournalJournal of Physical Chemistry B
Volume110
Issue number4
DOIs
Publication statusPublished - Feb 2 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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