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Reaction Chamber and Cathode Configurations in Arc Production of Fullerenes

Published online by Cambridge University Press:  15 February 2011

E. Pasqualini ,
C. Podesta ,
A. GarcÍa ,
A. Rafael ,
S. Dengra  and
M. Paulozzi
E. Pasqualini
Affiliation:
Dpto. Materiales. CAC. Comision Nacional de Energía Atómica. Av. Libertador 8250, (1429) Buenos Aires, Argentina
C. Podesta
Affiliation:
Faculatad de Ciencias Exactas y Naturales., UNBA
A. GarcÍa
Affiliation:
Faculatad de Ciencias Exactas y Naturales., UNBA
A. Rafael
Affiliation:
Faculatad de Ciencias Exactas y Naturales., UNBA
S. Dengra
Affiliation:
Faculatad de Ciencias Exactas y Naturales., UNBA
M. Paulozzi
Affiliation:
Faculatad de Ciencias Exactas y Naturales., UNBA
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Abstract

The reaction chamber in the arc production of fullerenes was redesigned with a nozzle surrounding the decomposition zone to allow for clean collection of soot in a filtering cartridge. Quantitative analysis in the region of 300–430 nm in UV-visible spectra permits determination of the abundance of C60 and C70 in the soot. Calibrated curves of absorptivity for both pure fullerenes were employed. In equivalent conditions of current and pressure, electrographites of different origins have different decomposition rates and yields. A mechanism to interpret the cathodic deposit formation is proposed. Decomposition inside a closed cathodic cylinder yields 100% deposit.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 359: Symposium G – Science and Technology of Fullerene Materials , 1994 , 23
Copyright
Copyright © Materials Research Society 1995

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References

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