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Single walled carbon nanotube growth and chirality dependence on catalyst composition

A. Orbaek, A. Owens, C. Crouse, C. Pint, R. Hauge, A. Barron, Alvin Orbaek White Orcid Logo

Nanoscale, Volume: 5, Issue: 20, Start page: 9848

Swansea University Author: Alvin Orbaek White Orcid Logo

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DOI (Published version): 10.1039/c3nr03142j

Abstract

Vertical arrays of single walled carbon nanotubes (VA-SWNTs) were grown using bi-metallic nanoparticle pro-catalysts. Iron oxide particles were doped with varying quantities of first row transition metals (Mn, Co, Ni, and Cu) for a comparative study of the growth of nanotubes. VA-CNT samples were ve...

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Published in: Nanoscale
ISSN: 2040-3364 2040-3372
Published: Royal Society of Chemistry ($lbrace$RSC$rbrace$) 2013
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URI: https://cronfa.swan.ac.uk/Record/cronfa32804
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first_indexed 2017-03-29T19:06:04Z
last_indexed 2018-02-09T05:21:08Z
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spelling 2017-03-31T12:03:31.5411962 v2 32804 2017-03-29 Single walled carbon nanotube growth and chirality dependence on catalyst composition 8414a23650d4403fdfe1a735dbd2e24e 0000-0001-6338-5970 Alvin Orbaek White Alvin Orbaek White true false 2017-03-29 CHEG Vertical arrays of single walled carbon nanotubes (VA-SWNTs) were grown using bi-metallic nanoparticle pro-catalysts. Iron oxide particles were doped with varying quantities of first row transition metals (Mn, Co, Ni, and Cu) for a comparative study of the growth of nanotubes. VA-CNT samples were verified using scanning electron microscopy, and characterized using resonance Raman spectroscopy. The length of the VA-CNTs is used as a measure of catalyst activity: the presence of dopants results in a change in the CNT length and length distribution. Cross correlation of the Raman spectra reveal variations in the distribution of radial breathing mode peaks according to the pro-catalyst composition. The formation of various chirality nanotubes is constant between repetitive runs with a particular catalyst, but may be controlled by the identity and concentration of the metal dopants within the iron catalyst. These results demonstrate that the composition of the catalyst is a major driving force toward type selective growth of nanotubes. Journal Article Nanoscale 5 20 9848 Royal Society of Chemistry ($lbrace$RSC$rbrace$) 2040-3364 2040-3372 31 12 2013 2013-12-31 10.1039/c3nr03142j COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2017-03-31T12:03:31.5411962 2017-03-29T14:46:40.1293700 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering A. Orbaek 1 A. Owens 2 C. Crouse 3 C. Pint 4 R. Hauge 5 A. Barron 6 Alvin Orbaek White 0000-0001-6338-5970 7
title Single walled carbon nanotube growth and chirality dependence on catalyst composition
spellingShingle Single walled carbon nanotube growth and chirality dependence on catalyst composition
Alvin Orbaek White
title_short Single walled carbon nanotube growth and chirality dependence on catalyst composition
title_full Single walled carbon nanotube growth and chirality dependence on catalyst composition
title_fullStr Single walled carbon nanotube growth and chirality dependence on catalyst composition
title_full_unstemmed Single walled carbon nanotube growth and chirality dependence on catalyst composition
title_sort Single walled carbon nanotube growth and chirality dependence on catalyst composition
author_id_str_mv 8414a23650d4403fdfe1a735dbd2e24e
author_id_fullname_str_mv 8414a23650d4403fdfe1a735dbd2e24e_***_Alvin Orbaek White
author Alvin Orbaek White
author2 A. Orbaek
A. Owens
C. Crouse
C. Pint
R. Hauge
A. Barron
Alvin Orbaek White
format Journal article
container_title Nanoscale
container_volume 5
container_issue 20
container_start_page 9848
publishDate 2013
institution Swansea University
issn 2040-3364
2040-3372
doi_str_mv 10.1039/c3nr03142j
publisher Royal Society of Chemistry ($lbrace$RSC$rbrace$)
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
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description Vertical arrays of single walled carbon nanotubes (VA-SWNTs) were grown using bi-metallic nanoparticle pro-catalysts. Iron oxide particles were doped with varying quantities of first row transition metals (Mn, Co, Ni, and Cu) for a comparative study of the growth of nanotubes. VA-CNT samples were verified using scanning electron microscopy, and characterized using resonance Raman spectroscopy. The length of the VA-CNTs is used as a measure of catalyst activity: the presence of dopants results in a change in the CNT length and length distribution. Cross correlation of the Raman spectra reveal variations in the distribution of radial breathing mode peaks according to the pro-catalyst composition. The formation of various chirality nanotubes is constant between repetitive runs with a particular catalyst, but may be controlled by the identity and concentration of the metal dopants within the iron catalyst. These results demonstrate that the composition of the catalyst is a major driving force toward type selective growth of nanotubes.
published_date 2013-12-31T03:39:08Z
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score 10.928009