Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry

[Image: see text] Faradaic reactions at low supporting electrolyte concentrations induce convection via electroosmotic flows. Here we combine finite-element simulations and electrochemical measurements on microparticles at ultramicroelectrodes to explore this effect. We show that convection becomes...

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Autores principales: Moazzenzade, Taghi, Yang, Xiaojun, Walterbos, Luc, Huskens, Jurriaan, Renault, Christophe, Lemay, Serge G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7582615/
https://www.ncbi.nlm.nih.gov/pubmed/33044066
http://dx.doi.org/10.1021/jacs.0c08450
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author Moazzenzade, Taghi
Yang, Xiaojun
Walterbos, Luc
Huskens, Jurriaan
Renault, Christophe
Lemay, Serge G.
author_facet Moazzenzade, Taghi
Yang, Xiaojun
Walterbos, Luc
Huskens, Jurriaan
Renault, Christophe
Lemay, Serge G.
author_sort Moazzenzade, Taghi
collection PubMed
description [Image: see text] Faradaic reactions at low supporting electrolyte concentrations induce convection via electroosmotic flows. Here we combine finite-element simulations and electrochemical measurements on microparticles at ultramicroelectrodes to explore this effect. We show that convection becomes the dominant form of mass transport for experiments at low salt concentrations, violating the common assumption that convection can be neglected.
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spelling pubmed-75826152020-10-26 Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry Moazzenzade, Taghi Yang, Xiaojun Walterbos, Luc Huskens, Jurriaan Renault, Christophe Lemay, Serge G. J Am Chem Soc [Image: see text] Faradaic reactions at low supporting electrolyte concentrations induce convection via electroosmotic flows. Here we combine finite-element simulations and electrochemical measurements on microparticles at ultramicroelectrodes to explore this effect. We show that convection becomes the dominant form of mass transport for experiments at low salt concentrations, violating the common assumption that convection can be neglected. American Chemical Society 2020-10-12 2020-10-21 /pmc/articles/PMC7582615/ /pubmed/33044066 http://dx.doi.org/10.1021/jacs.0c08450 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Moazzenzade, Taghi
Yang, Xiaojun
Walterbos, Luc
Huskens, Jurriaan
Renault, Christophe
Lemay, Serge G.
Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title_full Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title_fullStr Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title_full_unstemmed Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title_short Self-Induced Convection at Microelectrodes via Electroosmosis and Its Influence on Impact Electrochemistry
title_sort self-induced convection at microelectrodes via electroosmosis and its influence on impact electrochemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7582615/
https://www.ncbi.nlm.nih.gov/pubmed/33044066
http://dx.doi.org/10.1021/jacs.0c08450
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