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The Growth of Bamboo-Structured Carbon Tubes Using a Copper Catalyst

Published online by Cambridge University Press:  11 February 2011

B.L. Farmer ,
D.M. Holmes ,
L.J. Vandeperre ,
R.J. Stearn  and
W.J. Clegg
B.L. Farmer
Affiliation:
Ceramics Laboratory, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ.
D.M. Holmes
Affiliation:
Ceramics Laboratory, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ.
L.J. Vandeperre
Affiliation:
Ceramics Laboratory, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ.
R.J. Stearn
Affiliation:
Ceramics Laboratory, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ.
W.J. Clegg
Affiliation:
Ceramics Laboratory, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ.
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Abstract

Catalytic decomposition of methane has been used to grow bamboo-structured carbon tubes at temperatures ranging from 1233 K to 1291 K. No tube growth was observed at temperatures less than 1233 K, whilst above 1291 K pyrocarbon was the dominant product. It is shown that the average size of the copper catalyst particles was influenced by the reaction temperature, with the reciprocal of the maximum size of the copper particle decreasing linearly with temperature. This is consistent with the idea that the melting point can be reduced by surface energy effects. Observations show that under the conditions here the catalyst particle penetrates into the carbon fibre and a mechanism is proposed for development of the bamboo structure based upon the energy changes that take place.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 740: Symposium I – Nanomaterials for Structural Applications , 2002 , I3.8
Copyright
Copyright © Materials Research Society 2003

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References

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