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Journal article 1369 views

Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes

Alvin W. Orbaek, Andrew Barron Orcid Logo

Journal of Experimental Nanoscience, Volume: 10, Issue: 1, Pages: 66 - 76

Swansea University Author: Andrew Barron Orcid Logo

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DOI (Published version): 10.1080/17458080.2013.794979

Abstract

Quantification using SEM of single walled carbon nanotubes grown per unit area using a Co-Fe (50:50) catalyst system, prepared by the incorporation of the appropriate metal salts into a Spin-On Glass substrate, at 900 °C. The effects of substrate, as well as catalyst precursor concentration, were in...

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Published in: Journal of Experimental Nanoscience
Published: 2013
Online Access: http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.794979
URI: https://cronfa.swan.ac.uk/Record/cronfa22196
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first_indexed 2015-06-27T02:06:57Z
last_indexed 2018-02-09T05:00:25Z
id cronfa22196
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spelling 2015-06-26T15:53:08.6080515 v2 22196 2015-06-26 Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2015-06-26 CHEG Quantification using SEM of single walled carbon nanotubes grown per unit area using a Co-Fe (50:50) catalyst system, prepared by the incorporation of the appropriate metal salts into a Spin-On Glass substrate, at 900 °C. The effects of substrate, as well as catalyst precursor concentration, were investigated. SWNT growth density is maximised with a catalyst precursor concentration associated with the formation of catalyst nanoparticles of a critical size for SWNT nucleation. Samples were subjected to secondary growth, using a range of hydrogen:methane ratios to determine the optimum precursor composition. It was found that nucleation and growth stages are optimal under different conditions. Optimum conditions for nucleation resulted in >10× increase in SWNT density. Optimization is dependent on temperature and the partial pressure of reagent gas species. Journal Article Journal of Experimental Nanoscience 10 1 66 76 8 6 2013 2013-06-08 10.1080/17458080.2013.794979 http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.794979 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2015-06-26T15:53:08.6080515 2015-06-26T15:53:08.6080515 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Alvin W. Orbaek 1 Andrew Barron 0000-0002-2018-8288 2
title Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
spellingShingle Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
Andrew Barron
title_short Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
title_full Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
title_fullStr Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
title_full_unstemmed Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
title_sort Towards a ‘catalyst activity map’ regarding the nucleation and growth of single walled carbon nanotubes
author_id_str_mv 92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Andrew Barron
author2 Alvin W. Orbaek
Andrew Barron
format Journal article
container_title Journal of Experimental Nanoscience
container_volume 10
container_issue 1
container_start_page 66
publishDate 2013
institution Swansea University
doi_str_mv 10.1080/17458080.2013.794979
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
url http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.794979
document_store_str 0
active_str 0
description Quantification using SEM of single walled carbon nanotubes grown per unit area using a Co-Fe (50:50) catalyst system, prepared by the incorporation of the appropriate metal salts into a Spin-On Glass substrate, at 900 °C. The effects of substrate, as well as catalyst precursor concentration, were investigated. SWNT growth density is maximised with a catalyst precursor concentration associated with the formation of catalyst nanoparticles of a critical size for SWNT nucleation. Samples were subjected to secondary growth, using a range of hydrogen:methane ratios to determine the optimum precursor composition. It was found that nucleation and growth stages are optimal under different conditions. Optimum conditions for nucleation resulted in >10× increase in SWNT density. Optimization is dependent on temperature and the partial pressure of reagent gas species.
published_date 2013-06-08T03:26:24Z
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score 11.017797

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