Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation

Although the reversible wettability transition between hydrophobic and hydrophilic graphene under ultraviolet (UV) irradiation has been observed, the mechanism for this phenomenon remains unclear. In this work, experimental and theoretical investigations demonstrate that the H(2)O molecules are spli...

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Autores principales: Xu, Zhemi, Ao, Zhimin, Chu, Dewei, Younis, Adnan, Li, Chang Ming, Li, Sean
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4171696/
https://www.ncbi.nlm.nih.gov/pubmed/25245110
http://dx.doi.org/10.1038/srep06450
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author Xu, Zhemi
Ao, Zhimin
Chu, Dewei
Younis, Adnan
Li, Chang Ming
Li, Sean
author_facet Xu, Zhemi
Ao, Zhimin
Chu, Dewei
Younis, Adnan
Li, Chang Ming
Li, Sean
author_sort Xu, Zhemi
collection PubMed
description Although the reversible wettability transition between hydrophobic and hydrophilic graphene under ultraviolet (UV) irradiation has been observed, the mechanism for this phenomenon remains unclear. In this work, experimental and theoretical investigations demonstrate that the H(2)O molecules are split into hydrogen and hydroxyl radicals, which are then captured by the graphene surface through chemical binding in an ambient environment under UV irradiation. The dissociative adsorption of H(2)O molecules induces the wettability transition in graphene from hydrophobic to hydrophilic. Our discovery may hold promise for the potential application of graphene in water splitting.
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spelling pubmed-41716962014-09-24 Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation Xu, Zhemi Ao, Zhimin Chu, Dewei Younis, Adnan Li, Chang Ming Li, Sean Sci Rep Article Although the reversible wettability transition between hydrophobic and hydrophilic graphene under ultraviolet (UV) irradiation has been observed, the mechanism for this phenomenon remains unclear. In this work, experimental and theoretical investigations demonstrate that the H(2)O molecules are split into hydrogen and hydroxyl radicals, which are then captured by the graphene surface through chemical binding in an ambient environment under UV irradiation. The dissociative adsorption of H(2)O molecules induces the wettability transition in graphene from hydrophobic to hydrophilic. Our discovery may hold promise for the potential application of graphene in water splitting. Nature Publishing Group 2014-09-23 /pmc/articles/PMC4171696/ /pubmed/25245110 http://dx.doi.org/10.1038/srep06450 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
spellingShingle Article
Xu, Zhemi
Ao, Zhimin
Chu, Dewei
Younis, Adnan
Li, Chang Ming
Li, Sean
Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title_full Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title_fullStr Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title_full_unstemmed Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title_short Reversible Hydrophobic to Hydrophilic Transition in Graphene via Water Splitting Induced by UV Irradiation
title_sort reversible hydrophobic to hydrophilic transition in graphene via water splitting induced by uv irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4171696/
https://www.ncbi.nlm.nih.gov/pubmed/25245110
http://dx.doi.org/10.1038/srep06450
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