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Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction
[Image: see text] Porous carbon (PC) is obtained by carbonizing a zinc-coordination polymer (MOF-5) at 950 °C and PtM (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs), which are deposited on PC using the polyol method. Structural and morphological characterizations of the synthesized materials are carri...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970476/ https://www.ncbi.nlm.nih.gov/pubmed/33748591 http://dx.doi.org/10.1021/acsomega.0c05843 |
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author | Khan, Inayat Ali Badshah, Amin Shah, Faiz Ullah Assiri, Mohammed A. Nadeem, Muhammad Arif |
author_facet | Khan, Inayat Ali Badshah, Amin Shah, Faiz Ullah Assiri, Mohammed A. Nadeem, Muhammad Arif |
author_sort | Khan, Inayat Ali |
collection | PubMed |
description | [Image: see text] Porous carbon (PC) is obtained by carbonizing a zinc-coordination polymer (MOF-5) at 950 °C and PtM (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs), which are deposited on PC using the polyol method. Structural and morphological characterizations of the synthesized materials are carried out by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HRTEM), and the porosity was determined using a N(2) adsorption/desorption technique. The results revealed that PtM NPs are alloyed in the fcc phase and are well dispersed on the surface of PC. The electrochemical results show that PtM/PC 950 catalysts have higher methanol oxidation reaction (MOR) performances than commercial Pt/C (20%) catalysts. After 3000 s of chronoamperometry (CA) test, the MOR performances decreased in the order of Pt(1)Cu(1)/PC 950 > Pt(1)Ni(1)/PC 950 > Pt(1)Fe(1)/PC 950 > Pt(1)Zn(1)/PC 950 > Pt(1)Co(1)/PC 950. The high MOR activities of the synthesized catalysts are attributed to the effect of M on methanol dissociative chemisorption and improved tolerance of Pt against CO poisoning. The high specific surface area and porosity of the carbon support have an additional effect in boosting the MOR activities. Screening of the first row transition metals (d(5+n), n = 1, 2, 3, 4, 5) alloyed with Pt binary catalysts for MOR shows that Pt with d(8) (Ni) and d(9) (Cu) transition metals, in equivalent atomic ratios, are good anode catalysts for alcohol fuel cells. |
format | Online Article Text |
id | pubmed-7970476 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-79704762021-03-19 Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction Khan, Inayat Ali Badshah, Amin Shah, Faiz Ullah Assiri, Mohammed A. Nadeem, Muhammad Arif ACS Omega [Image: see text] Porous carbon (PC) is obtained by carbonizing a zinc-coordination polymer (MOF-5) at 950 °C and PtM (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs), which are deposited on PC using the polyol method. Structural and morphological characterizations of the synthesized materials are carried out by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HRTEM), and the porosity was determined using a N(2) adsorption/desorption technique. The results revealed that PtM NPs are alloyed in the fcc phase and are well dispersed on the surface of PC. The electrochemical results show that PtM/PC 950 catalysts have higher methanol oxidation reaction (MOR) performances than commercial Pt/C (20%) catalysts. After 3000 s of chronoamperometry (CA) test, the MOR performances decreased in the order of Pt(1)Cu(1)/PC 950 > Pt(1)Ni(1)/PC 950 > Pt(1)Fe(1)/PC 950 > Pt(1)Zn(1)/PC 950 > Pt(1)Co(1)/PC 950. The high MOR activities of the synthesized catalysts are attributed to the effect of M on methanol dissociative chemisorption and improved tolerance of Pt against CO poisoning. The high specific surface area and porosity of the carbon support have an additional effect in boosting the MOR activities. Screening of the first row transition metals (d(5+n), n = 1, 2, 3, 4, 5) alloyed with Pt binary catalysts for MOR shows that Pt with d(8) (Ni) and d(9) (Cu) transition metals, in equivalent atomic ratios, are good anode catalysts for alcohol fuel cells. American Chemical Society 2021-03-02 /pmc/articles/PMC7970476/ /pubmed/33748591 http://dx.doi.org/10.1021/acsomega.0c05843 Text en © 2021 The Authors. Published by American Chemical Society 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 | Khan, Inayat Ali Badshah, Amin Shah, Faiz Ullah Assiri, Mohammed A. Nadeem, Muhammad Arif Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title | Zinc-Coordination Polymer-Derived Porous Carbon-Supported
Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title_full | Zinc-Coordination Polymer-Derived Porous Carbon-Supported
Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title_fullStr | Zinc-Coordination Polymer-Derived Porous Carbon-Supported
Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title_full_unstemmed | Zinc-Coordination Polymer-Derived Porous Carbon-Supported
Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title_short | Zinc-Coordination Polymer-Derived Porous Carbon-Supported
Stable PtM Electrocatalysts for Methanol Oxidation Reaction |
title_sort | zinc-coordination polymer-derived porous carbon-supported
stable ptm electrocatalysts for methanol oxidation reaction |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970476/ https://www.ncbi.nlm.nih.gov/pubmed/33748591 http://dx.doi.org/10.1021/acsomega.0c05843 |
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