Flame-assisted chemical vapor deposition for continuous gas-phase synthesis of 1-nm-diameter single-wall carbon nanotubes

Shohei Okada, Hisashi Sugime, Kei Hasegawa, Toshio Ohsawa, Shohei Kataoka, Hiroki Sugiura, Suguru Noda

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5 Citations (Scopus)

Abstract

Flame synthesis enables the mass-production of carbon black and fullerene but not of carbon nanotubes (CNTs) due to the narrow window for producing CNTs while preventing tar generation. We report a flame-assisted chemical vapor deposition method, in which a premixed flame is used for the instantaneous generation of floating catalysts, the heating of the gas, and the growth of single-wall CNTs (SWCNTs) using a furnace at the downstream of the flame. This method yields high quality SWCNTs with a small average diameter of 0.96 nm, a small diameter deviation of 0.21 nm, and a high carbon purity of ∼90 wt%. Multiple parameters affect the SWCNT production significantly, which are investigated systematically and optimized carefully. The effects and possible mechanisms of the key parameters are discussed.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalCarbon
Volume138
DOIs
Publication statusPublished - 2018 Nov 1

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ASJC Scopus subject areas

  • Chemistry(all)

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