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Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid

[Image: see text] The behaviour of CTAB adsorbed on polycrystalline gold electrodes has been studied using a combination of spectroelectrochemical methods. The results indicate that the formation of the layer is the consequence of the precipitation of the CTAB micelles on the electrode surface as br...

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Autores principales: Gisbert-González, José M., Briega-Martos, Valentín, Vidal-Iglesias, Francisco J., Cuesta, Ángel, Feliu, Juan M., Herrero, E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9948534/
https://www.ncbi.nlm.nih.gov/pubmed/36753691
http://dx.doi.org/10.1021/acs.langmuir.2c03226
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author Gisbert-González, José M.
Briega-Martos, Valentín
Vidal-Iglesias, Francisco J.
Cuesta, Ángel
Feliu, Juan M.
Herrero, E.
author_facet Gisbert-González, José M.
Briega-Martos, Valentín
Vidal-Iglesias, Francisco J.
Cuesta, Ángel
Feliu, Juan M.
Herrero, E.
author_sort Gisbert-González, José M.
collection PubMed
description [Image: see text] The behaviour of CTAB adsorbed on polycrystalline gold electrodes has been studied using a combination of spectroelectrochemical methods. The results indicate that the formation of the layer is the consequence of the precipitation of the CTAB micelles on the electrode surface as bromide ions, which stabilize the micelles, are replaced by perchlorate anions. This process leads to the formation of CTA(+) layers in which perchlorate ions are intercalated, in which the adlayer suffers a continuous rearrangement that leads to the formation of micro-dominions of different types of hydrogen-bonded water populations throughout the adlayer. After prolonged cycling, a stable situation is reached. Under these conditions, water molecules permeate through the adlayer toward the electrode surface at potentials positive of the potential of zero charge, due to the repulsion between the CTA(+) layer and the positive charge of the electrode.
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spelling pubmed-99485342023-02-24 Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid Gisbert-González, José M. Briega-Martos, Valentín Vidal-Iglesias, Francisco J. Cuesta, Ángel Feliu, Juan M. Herrero, E. Langmuir [Image: see text] The behaviour of CTAB adsorbed on polycrystalline gold electrodes has been studied using a combination of spectroelectrochemical methods. The results indicate that the formation of the layer is the consequence of the precipitation of the CTAB micelles on the electrode surface as bromide ions, which stabilize the micelles, are replaced by perchlorate anions. This process leads to the formation of CTA(+) layers in which perchlorate ions are intercalated, in which the adlayer suffers a continuous rearrangement that leads to the formation of micro-dominions of different types of hydrogen-bonded water populations throughout the adlayer. After prolonged cycling, a stable situation is reached. Under these conditions, water molecules permeate through the adlayer toward the electrode surface at potentials positive of the potential of zero charge, due to the repulsion between the CTA(+) layer and the positive charge of the electrode. American Chemical Society 2023-02-08 /pmc/articles/PMC9948534/ /pubmed/36753691 http://dx.doi.org/10.1021/acs.langmuir.2c03226 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Gisbert-González, José M.
Briega-Martos, Valentín
Vidal-Iglesias, Francisco J.
Cuesta, Ángel
Feliu, Juan M.
Herrero, E.
Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title_full Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title_fullStr Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title_full_unstemmed Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title_short Spectroelectrochemical Studies of CTAB Adsorbed on Gold Surfaces in Perchloric Acid
title_sort spectroelectrochemical studies of ctab adsorbed on gold surfaces in perchloric acid
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9948534/
https://www.ncbi.nlm.nih.gov/pubmed/36753691
http://dx.doi.org/10.1021/acs.langmuir.2c03226
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