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Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes

Direct alcohol fuel cells are deemed as green and sustainable energy resources; however, CO-poisoning of Pt-based catalysts is a critical barrier to their commercialization. Thus, investigation of the electrochemical CO oxidation activity (CO(Oxid)) of Pt-based catalyst over pH ranges as a function...

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Autores principales: Abdelgawad, Ahmed, Salah, Belal, Eid, Kamel, Abdullah, Aboubakr M., Al-Hajri, Rashid S., Al-Abri, Mohammed, Hassan, Mohammad K., Al-Sulaiti, Leena A., Ahmadaliev, Doniyorbek, Ozoemena, Kenneth I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9737813/
https://www.ncbi.nlm.nih.gov/pubmed/36499359
http://dx.doi.org/10.3390/ijms232315034
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author Abdelgawad, Ahmed
Salah, Belal
Eid, Kamel
Abdullah, Aboubakr M.
Al-Hajri, Rashid S.
Al-Abri, Mohammed
Hassan, Mohammad K.
Al-Sulaiti, Leena A.
Ahmadaliev, Doniyorbek
Ozoemena, Kenneth I.
author_facet Abdelgawad, Ahmed
Salah, Belal
Eid, Kamel
Abdullah, Aboubakr M.
Al-Hajri, Rashid S.
Al-Abri, Mohammed
Hassan, Mohammad K.
Al-Sulaiti, Leena A.
Ahmadaliev, Doniyorbek
Ozoemena, Kenneth I.
author_sort Abdelgawad, Ahmed
collection PubMed
description Direct alcohol fuel cells are deemed as green and sustainable energy resources; however, CO-poisoning of Pt-based catalysts is a critical barrier to their commercialization. Thus, investigation of the electrochemical CO oxidation activity (CO(Oxid)) of Pt-based catalyst over pH ranges as a function of Pt-shape is necessary and is not yet reported. Herein, porous Pt nanodendrites (Pt NDs) were synthesized via the ultrasonic irradiation method, and its CO oxidation performance was benchmarked in different electrolytes relative to 1-D Pt chains nanostructure (Pt NCs) and commercial Pt/C catalyst under the same condition. This is a trial to confirm the effect of the size and shape of Pt as well as the pH of electrolytes on the CO(Oxid). The CO(Oxid) activity and durability of Pt NDs are substantially superior to Pt NCs and Pt/C in HClO(4), KOH, and NaHCO(3) electrolytes, respectively, owing to the porous branched structure with a high surface area, which maximizes Pt utilization. Notably, the CO(Oxid) performance of Pt NPs in HClO(4) is higher than that in NaHCO(3), and KOH under the same reaction conditions. This study may open the way for understanding the CO(Oxid) activities of Pt-based catalysts and avoiding CO-poisoning in fuel cells.
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spelling pubmed-97378132022-12-11 Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes Abdelgawad, Ahmed Salah, Belal Eid, Kamel Abdullah, Aboubakr M. Al-Hajri, Rashid S. Al-Abri, Mohammed Hassan, Mohammad K. Al-Sulaiti, Leena A. Ahmadaliev, Doniyorbek Ozoemena, Kenneth I. Int J Mol Sci Article Direct alcohol fuel cells are deemed as green and sustainable energy resources; however, CO-poisoning of Pt-based catalysts is a critical barrier to their commercialization. Thus, investigation of the electrochemical CO oxidation activity (CO(Oxid)) of Pt-based catalyst over pH ranges as a function of Pt-shape is necessary and is not yet reported. Herein, porous Pt nanodendrites (Pt NDs) were synthesized via the ultrasonic irradiation method, and its CO oxidation performance was benchmarked in different electrolytes relative to 1-D Pt chains nanostructure (Pt NCs) and commercial Pt/C catalyst under the same condition. This is a trial to confirm the effect of the size and shape of Pt as well as the pH of electrolytes on the CO(Oxid). The CO(Oxid) activity and durability of Pt NDs are substantially superior to Pt NCs and Pt/C in HClO(4), KOH, and NaHCO(3) electrolytes, respectively, owing to the porous branched structure with a high surface area, which maximizes Pt utilization. Notably, the CO(Oxid) performance of Pt NPs in HClO(4) is higher than that in NaHCO(3), and KOH under the same reaction conditions. This study may open the way for understanding the CO(Oxid) activities of Pt-based catalysts and avoiding CO-poisoning in fuel cells. MDPI 2022-11-30 /pmc/articles/PMC9737813/ /pubmed/36499359 http://dx.doi.org/10.3390/ijms232315034 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Abdelgawad, Ahmed
Salah, Belal
Eid, Kamel
Abdullah, Aboubakr M.
Al-Hajri, Rashid S.
Al-Abri, Mohammed
Hassan, Mohammad K.
Al-Sulaiti, Leena A.
Ahmadaliev, Doniyorbek
Ozoemena, Kenneth I.
Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title_full Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title_fullStr Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title_full_unstemmed Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title_short Pt-Based Nanostructures for Electrochemical Oxidation of CO: Unveiling the Effect of Shapes and Electrolytes
title_sort pt-based nanostructures for electrochemical oxidation of co: unveiling the effect of shapes and electrolytes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9737813/
https://www.ncbi.nlm.nih.gov/pubmed/36499359
http://dx.doi.org/10.3390/ijms232315034
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