TY - JOUR
T1 - Flame-assisted chemical vapor deposition for continuous gas-phase synthesis of 1-nm-diameter single-wall carbon nanotubes
AU - Okada, Shohei
AU - Sugime, Hisashi
AU - Hasegawa, Kei
AU - Osawa, Toshio
AU - Kataoka, Shohei
AU - Sugiura, Hiroki
AU - Noda, Suguru
N1 - Funding Information:
The authors thank Mr. Jun Ohshima and Ms. Mai Yamaguchi for their contribution at the early stage of this work, Mr. Tatsuya Igarashi and Mr. Tetsuya Watanabe at FUJIFILM Corporation for the fruitful discussion, and Mr. Shinpei Enomoto at Kagami Memorial Research Institute for Materials Science and Technology, Waseda University for TEM observation. TG-DTA analysis was conducted in The Materials Characterization Central Laboratory, Waseda University. This work is financially supported in part by JSPS KAKENHI Grant Numbers JP25630358 and JP25107002 , Japan.
Publisher Copyright:
© 2018 The Authors
PY - 2018/11
Y1 - 2018/11
N2 - 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.
AB - 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.
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U2 - 10.1016/j.carbon.2018.05.060
DO - 10.1016/j.carbon.2018.05.060
M3 - Article
AN - SCOPUS:85049302699
VL - 138
SP - 1
EP - 7
JO - Carbon
JF - Carbon
SN - 0008-6223
ER -