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Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates

Sagar Jain, Federico Cesano, Domenica Scarano, Tomas Edvinsson

Physical Chemistry Chemical Physics, Volume: 19, Issue: 45, Pages: 30667 - 30674

Swansea University Author: Sagar Jain

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DOI (Published version): 10.1039/C7CP06973A

Abstract

Carbon nanotubes (CNTs) are considered promising for a large range of emerging technologies ranging from advanced electronics to utilization as nanoreactors. Here we report a controlled facile synthesis of aligned carbon nanotubes with very small dimensions directly grown on steel grid substrate via...

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Published in: Physical Chemistry Chemical Physics
ISSN: 1463-9076 1463-9084
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa36420
first_indexed 2017-10-31T20:05:58Z
last_indexed 2018-02-09T05:28:41Z
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spelling 2018-01-08T11:37:41.7420200 v2 36420 2017-10-31 Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates 7073e179bb5b82db3e3efd3a8cd07139 Sagar Jain Sagar Jain true false 2017-10-31 Carbon nanotubes (CNTs) are considered promising for a large range of emerging technologies ranging from advanced electronics to utilization as nanoreactors. Here we report a controlled facile synthesis of aligned carbon nanotubes with very small dimensions directly grown on steel grid substrate via two-step catalytic chemical vapor deposition (CCVD) of molecular catalyst (Ferrocene) with Ethylene as carbon source. The system is characterized by resonance Raman and show single walled carbon nanotube (SWCNT) arrays composed of 0.80 nm and 1.24 nm semiconducting CNTs, as analyzed with Kataura analysis, approaching the lowest diameters attainable in SWCNTs. The G+ and G- mode splitting, G+ line shapes, and ring breathing modes (RBMs) are analyzed to characterize the CNTs. The approach results in close packed and vertically aligned SWCNT bundles formed into a carbon hair shapes, with some contributions from multiwall CNTs (MWCNTs). IR spectroscopy is utilized to characterize the edge/defect states with the possibilities to form esters and ether bonds in the as-prepared CNTs. The stepwise deposition of catalyst followed by carbon source gives a control over formation of small diameter single walled carbon nanotubes (SWCNT). The utilization of molecular catalysts for narrow diameter growth directly on steel grid substrates forms a promising approach for producing cost-effective CNT substrates for a plethora of sensing and catalytic applications. Journal Article Physical Chemistry Chemical Physics 19 45 30667 30674 1463-9076 1463-9084 31 12 2017 2017-12-31 10.1039/C7CP06973A COLLEGE NANME COLLEGE CODE Swansea University 2018-01-08T11:37:41.7420200 2017-10-31T15:35:36.1920022 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Sagar Jain 1 Federico Cesano 2 Domenica Scarano 3 Tomas Edvinsson 4 0036420-31102017155323.pdf jain2017(2).pdf 2017-10-31T15:53:23.6970000 Output 664604 application/pdf Accepted Manuscript true 2018-10-30T00:00:00.0000000 false eng 0036420-31102017154049.pdf jain2017.pdf 2017-10-31T15:40:49.9100000 Output 1497934 application/pdf Accepted Manuscript true 2018-10-30T00:00:00.0000000 false eng
title Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
spellingShingle Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
Sagar Jain
title_short Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
title_full Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
title_fullStr Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
title_full_unstemmed Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
title_sort Resonance Raman and IR spectroscopy of aligned carbon nanotube arrays with extremely narrow diameters prepared with molecular catalysts on steel substrates
author_id_str_mv 7073e179bb5b82db3e3efd3a8cd07139
author_id_fullname_str_mv 7073e179bb5b82db3e3efd3a8cd07139_***_Sagar Jain
author Sagar Jain
author2 Sagar Jain
Federico Cesano
Domenica Scarano
Tomas Edvinsson
format Journal article
container_title Physical Chemistry Chemical Physics
container_volume 19
container_issue 45
container_start_page 30667
publishDate 2017
institution Swansea University
issn 1463-9076
1463-9084
doi_str_mv 10.1039/C7CP06973A
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 - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Carbon nanotubes (CNTs) are considered promising for a large range of emerging technologies ranging from advanced electronics to utilization as nanoreactors. Here we report a controlled facile synthesis of aligned carbon nanotubes with very small dimensions directly grown on steel grid substrate via two-step catalytic chemical vapor deposition (CCVD) of molecular catalyst (Ferrocene) with Ethylene as carbon source. The system is characterized by resonance Raman and show single walled carbon nanotube (SWCNT) arrays composed of 0.80 nm and 1.24 nm semiconducting CNTs, as analyzed with Kataura analysis, approaching the lowest diameters attainable in SWCNTs. The G+ and G- mode splitting, G+ line shapes, and ring breathing modes (RBMs) are analyzed to characterize the CNTs. The approach results in close packed and vertically aligned SWCNT bundles formed into a carbon hair shapes, with some contributions from multiwall CNTs (MWCNTs). IR spectroscopy is utilized to characterize the edge/defect states with the possibilities to form esters and ether bonds in the as-prepared CNTs. The stepwise deposition of catalyst followed by carbon source gives a control over formation of small diameter single walled carbon nanotubes (SWCNT). The utilization of molecular catalysts for narrow diameter growth directly on steel grid substrates forms a promising approach for producing cost-effective CNT substrates for a plethora of sensing and catalytic applications.
published_date 2017-12-31T04:08:12Z
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