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Systematic in situ hydration neutron reflectometry study on Nafion thin films

Hamish Cavaye Orcid Logo, Rebecca J. L. Welbourn Orcid Logo, Jan G. Gluschke Orcid Logo, Paul Hughes, Ky V. Nguyen, Adam P. Micolich, Paul Meredith Orcid Logo, Bernard Mostert Orcid Logo

Physical Chemistry Chemical Physics, Volume: 24, Issue: 46, Pages: 28554 - 28563

Swansea University Authors: Paul Hughes, Paul Meredith Orcid Logo, Bernard Mostert Orcid Logo

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DOI (Published version): 10.1039/d2cp03067e

Abstract

Reported herein is a neutron reflectometry (NR) study on hydrated Nafion thin films (∼30 nm) on a silicon substrate with native oxide. The Nafion morphology is investigated systematically across the whole relative humidity range using both H2O and D2O vapours to enable a comparative study. By utilis...

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Published in: Physical Chemistry Chemical Physics
ISSN: 1463-9076 1463-9084
Published: Royal Society of Chemistry (RSC) 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa62079
first_indexed 2022-11-29T10:15:21Z
last_indexed 2023-02-04T04:13:10Z
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spelling 2023-02-03T15:54:01.5439703 v2 62079 2022-11-29 Systematic in situ hydration neutron reflectometry study on Nafion thin films d197712276227b0c57e7350f06c36a02 Paul Hughes Paul Hughes true false 31e8fe57fa180d418afd48c3af280c2e 0000-0002-9049-7414 Paul Meredith Paul Meredith true false a353503c976a7338c7708a32e82f451f 0000-0002-9590-2124 Bernard Mostert Bernard Mostert true false 2022-11-29 Reported herein is a neutron reflectometry (NR) study on hydrated Nafion thin films (∼30 nm) on a silicon substrate with native oxide. The Nafion morphology is investigated systematically across the whole relative humidity range using both H2O and D2O vapours to enable a comparative study. By utilising this systematic approach two key results have been obtained. The first is that by leveraging the strong positive scattering signal from the D2O vapour, a complete and systematic water adsorption isotherm (Type II) for a Nafion thin film is produced. Utilising the slight negative scattering signal of the H2O enabled the quantification of the hydration dependent evolution of the formation of Nafion/water lamellae near the substrate surface. The number of lamellae layers increases continuously with hydration, and does not form abruptly. We also report the effects of swelling on the thin films across the relative humidity ranges. The work reported should prove useful in quantifying other hydration dependent properties of Nafion thin films such as conductivity and understanding Nafion/semiconductor based devices, as well as showcasing a NR methodology for other hydrophilic polymers. Journal Article Physical Chemistry Chemical Physics 24 46 28554 28563 Royal Society of Chemistry (RSC) 1463-9076 1463-9084 22 11 2022 2022-11-22 10.1039/d2cp03067e COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) Australian Research Council (ARC) under DP170104024 and DP170102552 Welsh European Funding Office (European Regional Development Fund) through the Sêr Cymru II Program. European Regional Development Fund Welsh Government through the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No 663830. Swansea University Strategic Initiative in Sustainable Advanced Materials. NSW node of the Australian National Fabrication Facility (ANFF). 2023-02-03T15:54:01.5439703 2022-11-29T10:07:59.2151403 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Hamish Cavaye 0000-0002-3540-0253 1 Rebecca J. L. Welbourn 0000-0002-4254-5354 2 Jan G. Gluschke 0000-0001-7165-8852 3 Paul Hughes 4 Ky V. Nguyen 5 Adam P. Micolich 6 Paul Meredith 0000-0002-9049-7414 7 Bernard Mostert 0000-0002-9590-2124 8 62079__25946__ea549dff65d4403dabd39c1d0ebfb28e.pdf d2cp03067e.pdf 2022-11-29T10:14:39.2446067 Output 1952470 application/pdf Version of Record true This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence true eng http://creativecommons.org/licenses/by-nc/3.0/
title Systematic in situ hydration neutron reflectometry study on Nafion thin films
spellingShingle Systematic in situ hydration neutron reflectometry study on Nafion thin films
Paul Hughes
Paul Meredith
Bernard Mostert
title_short Systematic in situ hydration neutron reflectometry study on Nafion thin films
title_full Systematic in situ hydration neutron reflectometry study on Nafion thin films
title_fullStr Systematic in situ hydration neutron reflectometry study on Nafion thin films
title_full_unstemmed Systematic in situ hydration neutron reflectometry study on Nafion thin films
title_sort Systematic in situ hydration neutron reflectometry study on Nafion thin films
author_id_str_mv d197712276227b0c57e7350f06c36a02
31e8fe57fa180d418afd48c3af280c2e
a353503c976a7338c7708a32e82f451f
author_id_fullname_str_mv d197712276227b0c57e7350f06c36a02_***_Paul Hughes
31e8fe57fa180d418afd48c3af280c2e_***_Paul Meredith
a353503c976a7338c7708a32e82f451f_***_Bernard Mostert
author Paul Hughes
Paul Meredith
Bernard Mostert
author2 Hamish Cavaye
Rebecca J. L. Welbourn
Jan G. Gluschke
Paul Hughes
Ky V. Nguyen
Adam P. Micolich
Paul Meredith
Bernard Mostert
format Journal article
container_title Physical Chemistry Chemical Physics
container_volume 24
container_issue 46
container_start_page 28554
publishDate 2022
institution Swansea University
issn 1463-9076
1463-9084
doi_str_mv 10.1039/d2cp03067e
publisher Royal Society of Chemistry (RSC)
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 - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 1
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description Reported herein is a neutron reflectometry (NR) study on hydrated Nafion thin films (∼30 nm) on a silicon substrate with native oxide. The Nafion morphology is investigated systematically across the whole relative humidity range using both H2O and D2O vapours to enable a comparative study. By utilising this systematic approach two key results have been obtained. The first is that by leveraging the strong positive scattering signal from the D2O vapour, a complete and systematic water adsorption isotherm (Type II) for a Nafion thin film is produced. Utilising the slight negative scattering signal of the H2O enabled the quantification of the hydration dependent evolution of the formation of Nafion/water lamellae near the substrate surface. The number of lamellae layers increases continuously with hydration, and does not form abruptly. We also report the effects of swelling on the thin films across the relative humidity ranges. The work reported should prove useful in quantifying other hydration dependent properties of Nafion thin films such as conductivity and understanding Nafion/semiconductor based devices, as well as showcasing a NR methodology for other hydrophilic polymers.
published_date 2022-11-22T14:26:25Z
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score 11.247077

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