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Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic Framework as a Promising Electrocatalyst for Oxygen Evolution Reaction
[Image: see text] Electrocatalytic generation of oxygen is of great significance for sustainable, clean, and efficient energy production. Multiple electron transfer in oxygen evolution reaction (OER) and its slow kinetics represent a serious hedge for efficient water splitting, requiring the design...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9775468/ https://www.ncbi.nlm.nih.gov/pubmed/35699592 http://dx.doi.org/10.1021/acs.inorgchem.2c00542 |
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author | Abazari, Reza Amani-Ghadim, Ali Reza Slawin, Alexandra M. Z. Carpenter-Warren, Cameron L. Kirillov, Alexander M. |
author_facet | Abazari, Reza Amani-Ghadim, Ali Reza Slawin, Alexandra M. Z. Carpenter-Warren, Cameron L. Kirillov, Alexander M. |
author_sort | Abazari, Reza |
collection | PubMed |
description | [Image: see text] Electrocatalytic generation of oxygen is of great significance for sustainable, clean, and efficient energy production. Multiple electron transfer in oxygen evolution reaction (OER) and its slow kinetics represent a serious hedge for efficient water splitting, requiring the design and development of advanced electrocatalysts with porous structures, high surface areas, abundant electroactive sites, and low overpotentials. These requisites are common for metal–organic frameworks (MOFs) and derived materials that are promising electrocatalysts for OER. The present work reports on the synthesis and full characterization of a heteroleptic 3D MOF, [Zn(2)(μ(4)-odba)(2)(μ-bpdh)](n)·nDMF (Zn-MUM-1), assembled from 4,4′-oxydibenzoic acid and 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (bpdh). Besides, a series of heterometallic MnZn-MUM-1 frameworks (abbreviated as Mn(0.5)Zn(0.5)-MUM-1, Mn(0.66)Zn(0.33)-MUM-1, and Mn(0.33)Zn(0.66)-MUM-1) was also prepared, characterized, and used for the fabrication of working electrodes based on Ni foam (NF), followed by their exploration in OER. These noble-metal-free and robust electrocatalysts are stable and do not require pyrolysis or calcination while exhibiting better electrocatalytic performance than the parent Zn-MUM-1/NF electrode. The experimental results show that the Mn(0.5)Zn(0.5)-MUM-1/NF electrocatalyst features the best OER activity with a low overpotential (253 mV at 10 mA cm(–2)) and Tafel slope (73 mV dec(–1)) as well as significant stability after 72 h or 6000 cycles. These excellent results are explained by a synergic effect of two different metals present in the Mn–Zn MOF as well as improved charge and ion transfer, conductivity, and stability characteristics. The present study thus widens the application of heterometallic MOFs as prospective and highly efficient electrocatalysts for OER. |
format | Online Article Text |
id | pubmed-9775468 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-97754682022-12-23 Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic Framework as a Promising Electrocatalyst for Oxygen Evolution Reaction Abazari, Reza Amani-Ghadim, Ali Reza Slawin, Alexandra M. Z. Carpenter-Warren, Cameron L. Kirillov, Alexander M. Inorg Chem [Image: see text] Electrocatalytic generation of oxygen is of great significance for sustainable, clean, and efficient energy production. Multiple electron transfer in oxygen evolution reaction (OER) and its slow kinetics represent a serious hedge for efficient water splitting, requiring the design and development of advanced electrocatalysts with porous structures, high surface areas, abundant electroactive sites, and low overpotentials. These requisites are common for metal–organic frameworks (MOFs) and derived materials that are promising electrocatalysts for OER. The present work reports on the synthesis and full characterization of a heteroleptic 3D MOF, [Zn(2)(μ(4)-odba)(2)(μ-bpdh)](n)·nDMF (Zn-MUM-1), assembled from 4,4′-oxydibenzoic acid and 2,5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (bpdh). Besides, a series of heterometallic MnZn-MUM-1 frameworks (abbreviated as Mn(0.5)Zn(0.5)-MUM-1, Mn(0.66)Zn(0.33)-MUM-1, and Mn(0.33)Zn(0.66)-MUM-1) was also prepared, characterized, and used for the fabrication of working electrodes based on Ni foam (NF), followed by their exploration in OER. These noble-metal-free and robust electrocatalysts are stable and do not require pyrolysis or calcination while exhibiting better electrocatalytic performance than the parent Zn-MUM-1/NF electrode. The experimental results show that the Mn(0.5)Zn(0.5)-MUM-1/NF electrocatalyst features the best OER activity with a low overpotential (253 mV at 10 mA cm(–2)) and Tafel slope (73 mV dec(–1)) as well as significant stability after 72 h or 6000 cycles. These excellent results are explained by a synergic effect of two different metals present in the Mn–Zn MOF as well as improved charge and ion transfer, conductivity, and stability characteristics. The present study thus widens the application of heterometallic MOFs as prospective and highly efficient electrocatalysts for OER. American Chemical Society 2022-06-14 2022-06-27 /pmc/articles/PMC9775468/ /pubmed/35699592 http://dx.doi.org/10.1021/acs.inorgchem.2c00542 Text en © 2022 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 | Abazari, Reza Amani-Ghadim, Ali Reza Slawin, Alexandra M. Z. Carpenter-Warren, Cameron L. Kirillov, Alexander M. Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic Framework as a Promising Electrocatalyst for Oxygen Evolution Reaction |
title | Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic
Framework as a Promising Electrocatalyst
for Oxygen Evolution Reaction |
title_full | Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic
Framework as a Promising Electrocatalyst
for Oxygen Evolution Reaction |
title_fullStr | Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic
Framework as a Promising Electrocatalyst
for Oxygen Evolution Reaction |
title_full_unstemmed | Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic
Framework as a Promising Electrocatalyst
for Oxygen Evolution Reaction |
title_short | Non-Calcined Layer-Pillared Mn(0.5)Zn(0.5) Bimetallic–Organic
Framework as a Promising Electrocatalyst
for Oxygen Evolution Reaction |
title_sort | non-calcined layer-pillared mn(0.5)zn(0.5) bimetallic–organic
framework as a promising electrocatalyst
for oxygen evolution reaction |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9775468/ https://www.ncbi.nlm.nih.gov/pubmed/35699592 http://dx.doi.org/10.1021/acs.inorgchem.2c00542 |
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