Yield of fullerenes generated by contact arc method under He and Ar: dependence on gas pressure

Yahachi Saito; Motonori Inagaki; Hisanori Shinohara; Hideo Nagashima; Masato Ohkohchi; Yoshinori Ando

doi:10.1016/0009-2614(92)80104-J

Yield of fullerenes generated by contact arc method under He and Ar: dependence on gas pressure

Yahachi Saito, Motonori Inagaki, Hisanori Shinohara, Hideo Nagashima, Masato Ohkohchi, Yoshinori Ando

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Abstract

The yields of toluene-soluble material from carbon soot depend on the buffer gas as well as the pressure. Helium was more effective for yielding fullerenes than argon, and the optimum pressure was 20 Torr, under which a maximum yield of about 13 wt% was obtained. C₆₀ showed a maximum abundance at 20 Torr, while C₇₀ and higher fullerenes (C₇₆, C₇₈ and C₈₄) at a slightly higher pressure between 20 and 50 Torr. Raw soot was also studied by electron microscopy. The pressure dependence of the fullerene yield is discussed in terms of the cooling rate and diffusion of carbon vapor around the evaporation source.

Original language	English
Pages (from-to)	643-648
Number of pages	6
Journal	Chemical Physics Letters
Volume	200
Issue number	6
DOIs	https://doi.org/10.1016/0009-2614(92)80104-J
Publication status	Published - Dec 25 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/0009-2614(92)80104-J

Cite this

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title = "Yield of fullerenes generated by contact arc method under He and Ar: dependence on gas pressure",

abstract = "The yields of toluene-soluble material from carbon soot depend on the buffer gas as well as the pressure. Helium was more effective for yielding fullerenes than argon, and the optimum pressure was 20 Torr, under which a maximum yield of about 13 wt% was obtained. C60 showed a maximum abundance at 20 Torr, while C70 and higher fullerenes (C76, C78 and C84) at a slightly higher pressure between 20 and 50 Torr. Raw soot was also studied by electron microscopy. The pressure dependence of the fullerene yield is discussed in terms of the cooling rate and diffusion of carbon vapor around the evaporation source.",

author = "Yahachi Saito and Motonori Inagaki and Hisanori Shinohara and Hideo Nagashima and Masato Ohkohchi and Yoshinori Ando",

note = "Funding Information: This work has been supported by a Grant-in-Aid from the Japanese Ministry of Education, Science and Culture, and the Iketani Science and Technology Foundation.",

year = "1992",

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doi = "10.1016/0009-2614(92)80104-J",

language = "English",

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journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Yield of fullerenes generated by contact arc method under He and Ar

T2 - dependence on gas pressure

AU - Saito, Yahachi

AU - Inagaki, Motonori

AU - Shinohara, Hisanori

AU - Nagashima, Hideo

AU - Ohkohchi, Masato

AU - Ando, Yoshinori

N1 - Funding Information: This work has been supported by a Grant-in-Aid from the Japanese Ministry of Education, Science and Culture, and the Iketani Science and Technology Foundation.

PY - 1992/12/25

Y1 - 1992/12/25

N2 - The yields of toluene-soluble material from carbon soot depend on the buffer gas as well as the pressure. Helium was more effective for yielding fullerenes than argon, and the optimum pressure was 20 Torr, under which a maximum yield of about 13 wt% was obtained. C60 showed a maximum abundance at 20 Torr, while C70 and higher fullerenes (C76, C78 and C84) at a slightly higher pressure between 20 and 50 Torr. Raw soot was also studied by electron microscopy. The pressure dependence of the fullerene yield is discussed in terms of the cooling rate and diffusion of carbon vapor around the evaporation source.

AB - The yields of toluene-soluble material from carbon soot depend on the buffer gas as well as the pressure. Helium was more effective for yielding fullerenes than argon, and the optimum pressure was 20 Torr, under which a maximum yield of about 13 wt% was obtained. C60 showed a maximum abundance at 20 Torr, while C70 and higher fullerenes (C76, C78 and C84) at a slightly higher pressure between 20 and 50 Torr. Raw soot was also studied by electron microscopy. The pressure dependence of the fullerene yield is discussed in terms of the cooling rate and diffusion of carbon vapor around the evaporation source.

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JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 6

ER -

Yield of fullerenes generated by contact arc method under He and Ar: dependence on gas pressure

Abstract

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