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Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application
Highly efficient, well-dispersed PtRu alloy nanoparticles supported on high surface area microporous carbon (MPC) electrocatalysts, are prepared and tested for formic acid oxidation reaction (FAOR). The MPC is obtained by controlled carbonization of a zinc-benzenetricarboxylate metal-organic framewo...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237749/ https://www.ncbi.nlm.nih.gov/pubmed/32478034 http://dx.doi.org/10.3389/fchem.2020.00367 |
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author | Khan, Inayat Ali Sofian, Muhammad Badshah, Amin Khan, Muhammad Abdullah Imran, Muhammad Nadeem, Muhammad Arif |
author_facet | Khan, Inayat Ali Sofian, Muhammad Badshah, Amin Khan, Muhammad Abdullah Imran, Muhammad Nadeem, Muhammad Arif |
author_sort | Khan, Inayat Ali |
collection | PubMed |
description | Highly efficient, well-dispersed PtRu alloy nanoparticles supported on high surface area microporous carbon (MPC) electrocatalysts, are prepared and tested for formic acid oxidation reaction (FAOR). The MPC is obtained by controlled carbonization of a zinc-benzenetricarboxylate metal-organic framework (Zn-BTC MOF) precursor at 950°C, and PtRu (30 wt.%) nanoparticles (NPs) are prepared and deposited via a polyol chemical reduction method. The structural and morphological characterization of the synthesized electrocatalysts is carried out using powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), an energy dispersive X-ray (EDX) technique, and gas adsorption analysis (BET). The FAOR performance of the catalysts is investigated through cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). A correlation between high electrochemical surface area (ECSA) and high FAOR performance of the catalysts is observed. Among the materials employed, Pt(1)Ru(2)/MPC 950 with a high electrochemical surface area (25.3 m(2) g(−1)) consequently showed superior activity of the FAOR (I(r) = 9.50 mA cm(−2) and J(m) = 2,403 mA [Formula: see text]) at room temperature, with improved tolerance and stability toward carbonaceous species. The superior electrochemical performance, and tolerance to CO-poisoning and long-term stability is attributed to the high surface area carbon support (1,455 m(2) g(−1)) and high percentage loading of ruthenium (20 wt.%). The addition of Ru promotes the efficiency of electrocatalyst by offering FAOR via a bifunctional mechanism. |
format | Online Article Text |
id | pubmed-7237749 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-72377492020-05-29 Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application Khan, Inayat Ali Sofian, Muhammad Badshah, Amin Khan, Muhammad Abdullah Imran, Muhammad Nadeem, Muhammad Arif Front Chem Chemistry Highly efficient, well-dispersed PtRu alloy nanoparticles supported on high surface area microporous carbon (MPC) electrocatalysts, are prepared and tested for formic acid oxidation reaction (FAOR). The MPC is obtained by controlled carbonization of a zinc-benzenetricarboxylate metal-organic framework (Zn-BTC MOF) precursor at 950°C, and PtRu (30 wt.%) nanoparticles (NPs) are prepared and deposited via a polyol chemical reduction method. The structural and morphological characterization of the synthesized electrocatalysts is carried out using powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), an energy dispersive X-ray (EDX) technique, and gas adsorption analysis (BET). The FAOR performance of the catalysts is investigated through cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS). A correlation between high electrochemical surface area (ECSA) and high FAOR performance of the catalysts is observed. Among the materials employed, Pt(1)Ru(2)/MPC 950 with a high electrochemical surface area (25.3 m(2) g(−1)) consequently showed superior activity of the FAOR (I(r) = 9.50 mA cm(−2) and J(m) = 2,403 mA [Formula: see text]) at room temperature, with improved tolerance and stability toward carbonaceous species. The superior electrochemical performance, and tolerance to CO-poisoning and long-term stability is attributed to the high surface area carbon support (1,455 m(2) g(−1)) and high percentage loading of ruthenium (20 wt.%). The addition of Ru promotes the efficiency of electrocatalyst by offering FAOR via a bifunctional mechanism. Frontiers Media S.A. 2020-05-13 /pmc/articles/PMC7237749/ /pubmed/32478034 http://dx.doi.org/10.3389/fchem.2020.00367 Text en Copyright © 2020 Khan, Sofian, Badshah, Khan, Imran and Nadeem. 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 Khan, Inayat Ali Sofian, Muhammad Badshah, Amin Khan, Muhammad Abdullah Imran, Muhammad Nadeem, Muhammad Arif Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title | Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title_full | Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title_fullStr | Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title_full_unstemmed | Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title_short | Stable and Efficient PtRu Electrocatalysts Supported on Zn-BTC MOF Derived Microporous Carbon for Formic Acid Fuel Cells Application |
title_sort | stable and efficient ptru electrocatalysts supported on zn-btc mof derived microporous carbon for formic acid fuel cells application |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237749/ https://www.ncbi.nlm.nih.gov/pubmed/32478034 http://dx.doi.org/10.3389/fchem.2020.00367 |
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