The role of the sp2:sp3 substrate content in carbon supported nanotube growth

Richard J. Cartwright; Santiago Esconjauregui; Robert S. Weatherup; David Hardeman; Yuzheng Guo; Eleanor Wright; Daniel Oakes; Stephan Hofmann; John Robertson

doi:10.1016/j.carbon.2014.04.011

The role of the sp²:sp³ substrate content in carbon supported nanotube growth

Richard J. Cartwright, Santiago Esconjauregui, Robert S. Weatherup, David Hardeman, Yuzheng Guo, Eleanor Wright, Daniel Oakes, Stephan Hofmann, John Robertson

Research output: Contribution to journal › Article › peer-review

Abstract

We report the growth of vertically-aligned nanotube forests, of up to 0.2 mm in height, on an 85:15 sp2:sp3 carbon support with Fe catalyst. This is achieved by purely-thermal chemical vapour deposition with the catalyst pretreated in inert environments. Pretreating the catalyst in a reducing atmosphere causes catalyst diffusion into the support and the growth of defective tubes. Other sp2:sp3 compositions, including graphite, tetrahedral amorphous carbon, and pure diamond, also lead to the growth of defective carbon morphologies. These results pave the way towards controlled growth of forests on carbon fibres. It could give rise to applications in enhanced fuel cell electrodes and better hierarchical carbon fibre-nanotube composites.

Original language	English
Pages (from-to)	327-334
Journal	Carbon
Volume	75
DOIs	https://doi.org/10.1016/j.carbon.2014.04.011
Publication status	Published - 13 Apr 2014

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Cite this

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title = "The role of the sp2:sp3 substrate content in carbon supported nanotube growth",

abstract = "We report the growth of vertically-aligned nanotube forests, of up to 0.2 mm in height, on an 85:15 sp2:sp3 carbon support with Fe catalyst. This is achieved by purely-thermal chemical vapour deposition with the catalyst pretreated in inert environments. Pretreating the catalyst in a reducing atmosphere causes catalyst diffusion into the support and the growth of defective tubes. Other sp2:sp3 compositions, including graphite, tetrahedral amorphous carbon, and pure diamond, also lead to the growth of defective carbon morphologies. These results pave the way towards controlled growth of forests on carbon fibres. It could give rise to applications in enhanced fuel cell electrodes and better hierarchical carbon fibre-nanotube composites.",

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AU - Cartwright, Richard J.

AU - Esconjauregui, Santiago

AU - Weatherup, Robert S.

AU - Hardeman, David

AU - Guo, Yuzheng

AU - Wright, Eleanor

AU - Oakes, Daniel

AU - Hofmann, Stephan

AU - Robertson, John

PY - 2014/4/13

Y1 - 2014/4/13

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AB - We report the growth of vertically-aligned nanotube forests, of up to 0.2 mm in height, on an 85:15 sp2:sp3 carbon support with Fe catalyst. This is achieved by purely-thermal chemical vapour deposition with the catalyst pretreated in inert environments. Pretreating the catalyst in a reducing atmosphere causes catalyst diffusion into the support and the growth of defective tubes. Other sp2:sp3 compositions, including graphite, tetrahedral amorphous carbon, and pure diamond, also lead to the growth of defective carbon morphologies. These results pave the way towards controlled growth of forests on carbon fibres. It could give rise to applications in enhanced fuel cell electrodes and better hierarchical carbon fibre-nanotube composites.

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DO - 10.1016/j.carbon.2014.04.011

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JF - Carbon

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