Cargando…
Wien effect in interfacial water dissociation through proton-permeable graphene electrodes
Strong electric fields can accelerate molecular dissociation reactions. The phenomenon known as the Wien effect was previously observed using high-voltage electrolysis cells that produced fields of about 10(7) V m(−1), sufficient to accelerate the dissociation of weakly bound molecules (e.g., organi...
Autores principales: | , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9526707/ https://www.ncbi.nlm.nih.gov/pubmed/36182944 http://dx.doi.org/10.1038/s41467-022-33451-1 |
_version_ | 1784800939750719488 |
---|---|
author | Cai, J. Griffin, E. Guarochico-Moreira, V. H. Barry, D. Xin, B. Yagmurcukardes, M. Zhang, S. Geim, A. K. Peeters, F. M. Lozada-Hidalgo, M. |
author_facet | Cai, J. Griffin, E. Guarochico-Moreira, V. H. Barry, D. Xin, B. Yagmurcukardes, M. Zhang, S. Geim, A. K. Peeters, F. M. Lozada-Hidalgo, M. |
author_sort | Cai, J. |
collection | PubMed |
description | Strong electric fields can accelerate molecular dissociation reactions. The phenomenon known as the Wien effect was previously observed using high-voltage electrolysis cells that produced fields of about 10(7) V m(−1), sufficient to accelerate the dissociation of weakly bound molecules (e.g., organics and weak electrolytes). The observation of the Wien effect for the common case of water dissociation (H(2)O [Formula: see text] H(+) + OH(−)) has remained elusive. Here we study the dissociation of interfacial water adjacent to proton-permeable graphene electrodes and observe strong acceleration of the reaction in fields reaching above 10(8) V m(−1). The use of graphene electrodes allows measuring the proton currents arising exclusively from the dissociation of interfacial water, while the electric field driving the reaction is monitored through the carrier density induced in graphene by the same field. The observed exponential increase in proton currents is in quantitative agreement with Onsager’s theory. Our results also demonstrate that graphene electrodes can be valuable for the investigation of various interfacial phenomena involving proton transport. |
format | Online Article Text |
id | pubmed-9526707 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-95267072022-10-03 Wien effect in interfacial water dissociation through proton-permeable graphene electrodes Cai, J. Griffin, E. Guarochico-Moreira, V. H. Barry, D. Xin, B. Yagmurcukardes, M. Zhang, S. Geim, A. K. Peeters, F. M. Lozada-Hidalgo, M. Nat Commun Article Strong electric fields can accelerate molecular dissociation reactions. The phenomenon known as the Wien effect was previously observed using high-voltage electrolysis cells that produced fields of about 10(7) V m(−1), sufficient to accelerate the dissociation of weakly bound molecules (e.g., organics and weak electrolytes). The observation of the Wien effect for the common case of water dissociation (H(2)O [Formula: see text] H(+) + OH(−)) has remained elusive. Here we study the dissociation of interfacial water adjacent to proton-permeable graphene electrodes and observe strong acceleration of the reaction in fields reaching above 10(8) V m(−1). The use of graphene electrodes allows measuring the proton currents arising exclusively from the dissociation of interfacial water, while the electric field driving the reaction is monitored through the carrier density induced in graphene by the same field. The observed exponential increase in proton currents is in quantitative agreement with Onsager’s theory. Our results also demonstrate that graphene electrodes can be valuable for the investigation of various interfacial phenomena involving proton transport. Nature Publishing Group UK 2022-10-01 /pmc/articles/PMC9526707/ /pubmed/36182944 http://dx.doi.org/10.1038/s41467-022-33451-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Cai, J. Griffin, E. Guarochico-Moreira, V. H. Barry, D. Xin, B. Yagmurcukardes, M. Zhang, S. Geim, A. K. Peeters, F. M. Lozada-Hidalgo, M. Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title | Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title_full | Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title_fullStr | Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title_full_unstemmed | Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title_short | Wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
title_sort | wien effect in interfacial water dissociation through proton-permeable graphene electrodes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9526707/ https://www.ncbi.nlm.nih.gov/pubmed/36182944 http://dx.doi.org/10.1038/s41467-022-33451-1 |
work_keys_str_mv | AT caij wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT griffine wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT guarochicomoreiravh wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT barryd wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT xinb wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT yagmurcukardesm wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT zhangs wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT geimak wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT peetersfm wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes AT lozadahidalgom wieneffectininterfacialwaterdissociationthroughprotonpermeablegrapheneelectrodes |