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Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide

In this manuscript, an electrochemical architecture is designed that controls the kinetics of proton transfer to metal triazole complexes for electrocatalytic O(2) and CO(2) reduction. Self-assembled monolayers of these catalysts are attached to a glassy carbon electrode and covered with a lipid mon...

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Detalles Bibliográficos
Autores principales: Supakul, Skye N., Barile, Christopher J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232292/
https://www.ncbi.nlm.nih.gov/pubmed/30460230
http://dx.doi.org/10.3389/fchem.2018.00543
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author Supakul, Skye N.
Barile, Christopher J.
author_facet Supakul, Skye N.
Barile, Christopher J.
author_sort Supakul, Skye N.
collection PubMed
description In this manuscript, an electrochemical architecture is designed that controls the kinetics of proton transfer to metal triazole complexes for electrocatalytic O(2) and CO(2) reduction. Self-assembled monolayers of these catalysts are attached to a glassy carbon electrode and covered with a lipid monolayer containing proton carriers, which acts as a proton-permeable membrane. The O(2) reduction voltammograms on carbon are similar to those obtained on membrane-modified Au electrodes, which through the control of proton transfer rates, can be used to improve the selectivity of O(2) reduction. The improved voltage stability of the carbon platforms allows for the investigation of a CO(2) reduction catalyst inside a membrane. By controlling proton transfer kinetics across the lipid membrane, it is found that the relative rates of H(2), CO, and HCOOH production can be modulated. It is envisioned that the use of these membrane-modified carbon electrodes will aid in understanding catalytic reactions involving the transfer of multiple protons and electrons.
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spelling pubmed-62322922018-11-20 Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide Supakul, Skye N. Barile, Christopher J. Front Chem Chemistry In this manuscript, an electrochemical architecture is designed that controls the kinetics of proton transfer to metal triazole complexes for electrocatalytic O(2) and CO(2) reduction. Self-assembled monolayers of these catalysts are attached to a glassy carbon electrode and covered with a lipid monolayer containing proton carriers, which acts as a proton-permeable membrane. The O(2) reduction voltammograms on carbon are similar to those obtained on membrane-modified Au electrodes, which through the control of proton transfer rates, can be used to improve the selectivity of O(2) reduction. The improved voltage stability of the carbon platforms allows for the investigation of a CO(2) reduction catalyst inside a membrane. By controlling proton transfer kinetics across the lipid membrane, it is found that the relative rates of H(2), CO, and HCOOH production can be modulated. It is envisioned that the use of these membrane-modified carbon electrodes will aid in understanding catalytic reactions involving the transfer of multiple protons and electrons. Frontiers Media S.A. 2018-11-06 /pmc/articles/PMC6232292/ /pubmed/30460230 http://dx.doi.org/10.3389/fchem.2018.00543 Text en Copyright © 2018 Supakul and Barile. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Supakul, Skye N.
Barile, Christopher J.
Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title_full Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title_fullStr Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title_full_unstemmed Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title_short Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide
title_sort membrane-modified metal triazole complexes for the electrocatalytic reduction of oxygen and carbon dioxide
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232292/
https://www.ncbi.nlm.nih.gov/pubmed/30460230
http://dx.doi.org/10.3389/fchem.2018.00543
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