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Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions / Pavan M. V. Raja; Gibran L. Esquenazi; Kourtney D. Wright; Cathren Gowenlock; Bruce E. Brinson; Shirin Alexander; Daniel Jones; Varun Shenoy Gangoli; Andrew Barron

Nanoscale, Volume: 10, Issue: 41, Pages: 19628 - 19637

Swansea University Authors: Cathren, Gowenlock, Shirin, Alexander, Daniel, Jones, Andrew, Barron

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DOI (Published version): 10.1039/C8NR06485G

Abstract

The electromigration behaviour of raw and acid purified single walled carbon nanotubes (SWCNTs) in dilute aqueous systems (0.0034 mg mL−1), in the absence of surfactant, with the addition of either 0.85 M acetic acid or 0.1 M CuSO4, was evaluated using a 2-inch copper cathode and either a 2-inch cop...

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Published in: Nanoscale
ISSN: 2040-3364 2040-3372
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa45492
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spelling 2019-01-14T11:39:44.0744847 v2 45492 2018-11-08 Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions 3e999073c98799427c833bb5d331ef51 0000-0001-5774-5263 Cathren Gowenlock Cathren Gowenlock true false 0773cc55f7caf77817be08806b8b7497 0000-0002-4404-0026 Shirin Alexander Shirin Alexander true false 88aaf2ee4c51d4405ef7f81e2e8f7bdb Daniel Jones Daniel Jones true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2018-11-08 EEN The electromigration behaviour of raw and acid purified single walled carbon nanotubes (SWCNTs) in dilute aqueous systems (0.0034 mg mL−1), in the absence of surfactant, with the addition of either 0.85 M acetic acid or 0.1 M CuSO4, was evaluated using a 2-inch copper cathode and either a 2-inch copper or 0.5-inch platinum anode. The results showed that the electromigration of raw SWCNTs (with a high catalyst residue) in the presence of CuSO4 resulted in the formation of a Cu-SWCNT composite material at the cathode. In contrast, acid purified SWCNTs were observed to diffuse to a copper anode, creating fibrillated agglomerates with “rice-grain”-like morphologies. Upon acidification with acetic acid (or addition of CuSO4) the direction of electromigration reversed towards the cathode as a result of coordination of Cu2+ to the functional groups on the SWCNT overcoming the inherent negative charge of the acid purified SWCNTs. The result was the co-deposition of SWCNTs and Cu metal on the cathode. Addition of 0.005 M EDTA sequesters some of the Cu2+ and resulted in the separation of metal decorated SWCNTs to the cathode and un-decorated SWCNTs to the anode. The resulting SWCNT and Cu/SWCNT deposits were characterized by Raman spectroscopy, XPS, SEM, EDS, and TEM. Journal Article Nanoscale 10 41 19628 19637 2040-3364 2040-3372 31 12 2018 2018-12-31 10.1039/C8NR06485G COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-01-14T11:39:44.0744847 2018-11-08T09:32:27.7014854 College of Engineering Engineering Pavan M. V. Raja 1 Gibran L. Esquenazi 2 Kourtney D. Wright 3 Cathren Gowenlock 0000-0001-5774-5263 4 Bruce E. Brinson 5 Shirin Alexander 0000-0002-4404-0026 6 Daniel Jones 7 Varun Shenoy Gangoli 8 Andrew Barron 0000-0002-2018-8288 9 0045492-12112018104016.pdf raja2018.pdf 2018-11-12T10:40:16.6230000 Output 1474825 application/pdf Accepted Manuscript true 2019-10-02T00:00:00.0000000 true eng
title Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
spellingShingle Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
Cathren, Gowenlock
Shirin, Alexander
Daniel, Jones
Andrew, Barron
title_short Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
title_full Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
title_fullStr Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
title_full_unstemmed Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
title_sort Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions
author_id_str_mv 3e999073c98799427c833bb5d331ef51
0773cc55f7caf77817be08806b8b7497
88aaf2ee4c51d4405ef7f81e2e8f7bdb
92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv 3e999073c98799427c833bb5d331ef51_***_Cathren, Gowenlock
0773cc55f7caf77817be08806b8b7497_***_Shirin, Alexander
88aaf2ee4c51d4405ef7f81e2e8f7bdb_***_Daniel, Jones
92e452f20936d688d36f91c78574241d_***_Andrew, Barron
author Cathren, Gowenlock
Shirin, Alexander
Daniel, Jones
Andrew, Barron
author2 Pavan M. V. Raja
Gibran L. Esquenazi
Kourtney D. Wright
Cathren Gowenlock
Bruce E. Brinson
Shirin Alexander
Daniel Jones
Varun Shenoy Gangoli
Andrew Barron
format Journal article
container_title Nanoscale
container_volume 10
container_issue 41
container_start_page 19628
publishDate 2018
institution Swansea University
issn 2040-3364
2040-3372
doi_str_mv 10.1039/C8NR06485G
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
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description The electromigration behaviour of raw and acid purified single walled carbon nanotubes (SWCNTs) in dilute aqueous systems (0.0034 mg mL−1), in the absence of surfactant, with the addition of either 0.85 M acetic acid or 0.1 M CuSO4, was evaluated using a 2-inch copper cathode and either a 2-inch copper or 0.5-inch platinum anode. The results showed that the electromigration of raw SWCNTs (with a high catalyst residue) in the presence of CuSO4 resulted in the formation of a Cu-SWCNT composite material at the cathode. In contrast, acid purified SWCNTs were observed to diffuse to a copper anode, creating fibrillated agglomerates with “rice-grain”-like morphologies. Upon acidification with acetic acid (or addition of CuSO4) the direction of electromigration reversed towards the cathode as a result of coordination of Cu2+ to the functional groups on the SWCNT overcoming the inherent negative charge of the acid purified SWCNTs. The result was the co-deposition of SWCNTs and Cu metal on the cathode. Addition of 0.005 M EDTA sequesters some of the Cu2+ and resulted in the separation of metal decorated SWCNTs to the cathode and un-decorated SWCNTs to the anode. The resulting SWCNT and Cu/SWCNT deposits were characterized by Raman spectroscopy, XPS, SEM, EDS, and TEM.
published_date 2018-12-31T04:08:49Z
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