Gas-phase synthesis of single-wall carbon nanotubes from colloidal solution of metal nanoparticles

Hiroki Ago, Satoshi Ohshima, Kunio Uchida, Motoo Yumura

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)


Metal nanoparticles play an important role in chemical vapor deposition (CVD) synthesis of carbon nanotubes because nanoparticles not only catalyze the nanotube growth but also determine the structural characteristics of the nanotubes. We report on the synthesis of single-wall carbon nanotubes (SWNTs) on the basis of the gas-phase reaction of colloidal solutions of metal nanoparticles containing Co and Mo. The colloidal solution of the nanoparticles is prepared by a reverse micelle method and injected into a furnace, where the solvent serves as the carbon source while the nanoparticles act as the catalyst. We have found that addition of a small amount of thiophene leads to formation of the SWNTs. The formation mechanism of the SWNTs is discussed by comparing the present CVD and laser-ablation methods.

Original languageEnglish
Pages (from-to)10453-10456
Number of pages4
JournalJournal of Physical Chemistry B
Issue number43
Publication statusPublished - Nov 1 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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