TY - GEN
T1 - Possible growth region of single-walled carbon nanotube in CVD synthesis on the CHO components diagram
AU - Inoue, Shuhei
AU - Tomie, Takashi
AU - Matsumura, Yukihiko
AU - Kohno, Masamichi
N1 - Funding Information:
We are grateful for the support given our project by the technical staff at the Mount Stromlo Observatory. Work performed at LLNL is supported by the DOE under contract W-7405-ENG-48. Work performed by the Center for Particle Astrophysics personnel is supported by the NSF through AST 9120005. The work at MSSSO is supported by the Australian Department of Industry, Science, and Technology. K. G. and M. J. L. acknowledge support from DOE, Alfred P. Sloan, and Cottrell Scholar awards. C. S. acknowledges the generous support of the Packard, Seaver, and Sloan Foundations. W. S. is supported by a PPARC Advanced fellowship.
PY - 2011
Y1 - 2011
N2 - Considering the massive-scale synthesis of single-walled carbon nanotube (SWCNT), chemical vapor deposition has become a standard process for synthesizing CNTs. In most of these processes, oxygen and hydrogen atoms were included originally or added later; and they are expected to have important roles such that they helped in the removal of amorphous carbon and prevented SWCNTs from containing metal particles. However, whole perspectives for suitable carbon source or ideal balance among carbon, hydrogen, and oxygen have not been reported. We examined a variety of raw materials in our newly developed round-trip-type vacuum furnace in order to determine whether they could be used to synthesize a carbon nanotube. We used Raman spectroscopy for evaluation, and plotted the component ratios of effective and ineffective materials on a C-H-O ternary diagram. Consequently, it is clear that the growth region should satisfy the equation O < C < (H + O) in molar ratio.
AB - Considering the massive-scale synthesis of single-walled carbon nanotube (SWCNT), chemical vapor deposition has become a standard process for synthesizing CNTs. In most of these processes, oxygen and hydrogen atoms were included originally or added later; and they are expected to have important roles such that they helped in the removal of amorphous carbon and prevented SWCNTs from containing metal particles. However, whole perspectives for suitable carbon source or ideal balance among carbon, hydrogen, and oxygen have not been reported. We examined a variety of raw materials in our newly developed round-trip-type vacuum furnace in order to determine whether they could be used to synthesize a carbon nanotube. We used Raman spectroscopy for evaluation, and plotted the component ratios of effective and ineffective materials on a C-H-O ternary diagram. Consequently, it is clear that the growth region should satisfy the equation O < C < (H + O) in molar ratio.
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U2 - 10.1115/ajtec2011-44193
DO - 10.1115/ajtec2011-44193
M3 - Conference contribution
AN - SCOPUS:85088717429
SN - 9780791838921
T3 - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
BT - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
PB - American Society of Mechanical Engineers
T2 - ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
Y2 - 13 March 2011 through 17 March 2011
ER -