Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites
At solid/ice interfaces, a premelting layer is formed at temperatures below the melting point of bulk water. However, the structural and dynamic properties within the premelting layer have been a topic of intense debate. Herein, we determined the translational diffusion coefficient D(t) of water in...
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ftpubmed:oai:pubmedcentral.nih.gov:8048683 2023-05-15T16:37:21+02:00 Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites Li, Hailong Mars, Julian Lohstroh, Wiebke Koza, Michael Marek Butt, Hans‐Jürgen Mezger, Markus 2021-02-25 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048683/ http://www.ncbi.nlm.nih.gov/pubmed/33238050 https://doi.org/10.1002/anie.202013125 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048683/ http://www.ncbi.nlm.nih.gov/pubmed/33238050 http://dx.doi.org/10.1002/anie.202013125 © 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Angew Chem Int Ed Engl Research Articles Text 2021 ftpubmed https://doi.org/10.1002/anie.202013125 2021-04-25T00:28:22Z At solid/ice interfaces, a premelting layer is formed at temperatures below the melting point of bulk water. However, the structural and dynamic properties within the premelting layer have been a topic of intense debate. Herein, we determined the translational diffusion coefficient D(t) of water in ice/clay nanocomposites serving as model systems for permafrost by quasi‐elastic neutron scattering. Below the bulk melting point, a rapid decrease of D(t) is found for charged hydrophilic vermiculite, uncharged hydrophilic kaolin, and more hydrophobic talc, reaching plateau values below −4 °C. At this temperature, D(t) in the premelting layer is reduced up to a factor of two compared to supercooled bulk water. Adjacent to charged vermiculite the lowest water mobility was observed, followed by kaolin and the more hydrophobic talc. Results are explained by the intermolecular water interactions with different clay surfaces and interfacial segregation of the low‐density liquid water (LDL) component. Text Ice permafrost PubMed Central (PMC) Angewandte Chemie International Edition 60 14 7697 7702 |
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Research Articles Li, Hailong Mars, Julian Lohstroh, Wiebke Koza, Michael Marek Butt, Hans‐Jürgen Mezger, Markus Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
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Research Articles |
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At solid/ice interfaces, a premelting layer is formed at temperatures below the melting point of bulk water. However, the structural and dynamic properties within the premelting layer have been a topic of intense debate. Herein, we determined the translational diffusion coefficient D(t) of water in ice/clay nanocomposites serving as model systems for permafrost by quasi‐elastic neutron scattering. Below the bulk melting point, a rapid decrease of D(t) is found for charged hydrophilic vermiculite, uncharged hydrophilic kaolin, and more hydrophobic talc, reaching plateau values below −4 °C. At this temperature, D(t) in the premelting layer is reduced up to a factor of two compared to supercooled bulk water. Adjacent to charged vermiculite the lowest water mobility was observed, followed by kaolin and the more hydrophobic talc. Results are explained by the intermolecular water interactions with different clay surfaces and interfacial segregation of the low‐density liquid water (LDL) component. |
format |
Text |
author |
Li, Hailong Mars, Julian Lohstroh, Wiebke Koza, Michael Marek Butt, Hans‐Jürgen Mezger, Markus |
author_facet |
Li, Hailong Mars, Julian Lohstroh, Wiebke Koza, Michael Marek Butt, Hans‐Jürgen Mezger, Markus |
author_sort |
Li, Hailong |
title |
Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
title_short |
Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
title_full |
Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
title_fullStr |
Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
title_full_unstemmed |
Water Mobility in the Interfacial Liquid Layer of Ice/Clay Nanocomposites |
title_sort |
water mobility in the interfacial liquid layer of ice/clay nanocomposites |
publisher |
John Wiley and Sons Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048683/ http://www.ncbi.nlm.nih.gov/pubmed/33238050 https://doi.org/10.1002/anie.202013125 |
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Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Angew Chem Int Ed Engl |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8048683/ http://www.ncbi.nlm.nih.gov/pubmed/33238050 http://dx.doi.org/10.1002/anie.202013125 |
op_rights |
© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
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CC-BY |
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https://doi.org/10.1002/anie.202013125 |
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