CUED Publications database

Low temperature growth of carbon nanotubes on tetrahedral amorphous carbon using Fe-Cu catalyst

Cartwright, R and Esconjauregui, S and Hardeman, D and Bhardwaj, S and Weatherup, R and Guo, Y and D'Arsié, L and Bayer, B and Kidambi, P and Hofmann, S and Wright, E and Clarke, J and Oakes, D and Cepek, C and Robertson, J (2015) Low temperature growth of carbon nanotubes on tetrahedral amorphous carbon using Fe-Cu catalyst. Carbon, 81. pp. 639-649. ISSN 0008-6223

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Abstract

© 2014 Elsevier Ltd. All rights reserved. We report the growth of carbon nanotubes on tetrahedral-amorphous carbon using a Fe-Cu catalyst system at temperatures < 500°C. By X-ray photoemission spectroscopy, we show that Cu forms an alloy with Fe during the process of catalyst pretreatment. This not only dramatically enhances the catalytic activity of Fe towards the nucleation of nanotubes at low temperatures, but simultaneously reduces its propensity to diffuse into the bulk of carbon based substrates, thus minimising support damage. Such results prove the feasibility of growing nanotubes directly on carbon fibres, highlighting their potential for use in composites and fuel cell electrodes.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:00
Last Modified: 23 Nov 2017 03:49
DOI: