Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels

Abstract Dielectric behavior of salt aqueous solutions with various concentration in pristine and oxide graphene nanochannels has been investigated by means of molecular dynamic simulations. The motivation in performing this integrated set of simulations was to provide deep insight into the interact...

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Autores principales:	Bo Hu, Haochen Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d836d571dd16430f86796c6abd5f55f1
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spelling	oai:doaj.org-article:d836d571dd16430f86796c6abd5f55f12021-12-02T17:26:55ZAnomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels10.1038/s41598-021-98326-92045-2322https://doaj.org/article/d836d571dd16430f86796c6abd5f55f12021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98326-9https://doaj.org/toc/2045-2322Abstract Dielectric behavior of salt aqueous solutions with various concentration in pristine and oxide graphene nanochannels has been investigated by means of molecular dynamic simulations. The motivation in performing this integrated set of simulations was to provide deep insight into the interaction between the size of the enclosure and the oxidation degree of the membrane sheets on the dielectric properties. It was shown that the dielectric permittivity of both aqueous and NaCl solution in confined phase exhibits an anisotropic behavior. The in-plane component decreases with the increase of the concentration of NaCl solution while an increase of the out-of-plane dielectric is observed and these out-of-plane components exhibit a non-monotonous trend and thus exist a critical concentration of NaCl solution with 0.2 mol/L and 0.4 mol/L for both pristine and oxide graphene nanochannels, respectively. This peculiar dielectric behavior results from the addition of ions that significantly perturb the hydrogen bonding network of the confined system, and hence leading to a fluctuation of dipolar of water molecules and dielectric permittivity.Bo HuHaochen ZhuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Bo Hu Haochen Zhu Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
description	Abstract Dielectric behavior of salt aqueous solutions with various concentration in pristine and oxide graphene nanochannels has been investigated by means of molecular dynamic simulations. The motivation in performing this integrated set of simulations was to provide deep insight into the interaction between the size of the enclosure and the oxidation degree of the membrane sheets on the dielectric properties. It was shown that the dielectric permittivity of both aqueous and NaCl solution in confined phase exhibits an anisotropic behavior. The in-plane component decreases with the increase of the concentration of NaCl solution while an increase of the out-of-plane dielectric is observed and these out-of-plane components exhibit a non-monotonous trend and thus exist a critical concentration of NaCl solution with 0.2 mol/L and 0.4 mol/L for both pristine and oxide graphene nanochannels, respectively. This peculiar dielectric behavior results from the addition of ions that significantly perturb the hydrogen bonding network of the confined system, and hence leading to a fluctuation of dipolar of water molecules and dielectric permittivity.
format	article
author	Bo Hu Haochen Zhu
author_facet	Bo Hu Haochen Zhu
author_sort	Bo Hu
title	Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
title_short	Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
title_full	Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
title_fullStr	Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
title_full_unstemmed	Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
title_sort	anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d836d571dd16430f86796c6abd5f55f1
work_keys_str_mv	AT bohu anomalousdielectricbehaviorsofelectrolytesolutionsconfinedingrapheneoxidenanochannels AT haochenzhu anomalousdielectricbehaviorsofelectrolytesolutionsconfinedingrapheneoxidenanochannels
_version_	1718380817555652608

Anomalous dielectric behaviors of electrolyte solutions confined in graphene oxide nanochannels

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