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Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification

Hydrogen is increasingly being discussed as clean energy for the goal of net-zero carbon emissions, applied in the proton-exchange-membrane fuel cells (PEMFC). The preferential oxidation of CO (PROX) in hydrogen is a promising solution for hydrogen purification to avoid catalysts from being poisoned...

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Autores principales: Jia, Zhimin, Qin, Xuetao, Chen, Yunlei, Cai, Xiangbin, Gao, Zirui, Peng, Mi, Huang, Fei, Xiao, Dequan, Wen, Xiaodong, Wang, Ning, Jiang, Zheng, Zhou, Wu, Liu, Hongyang, Ma, Ding
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9649773/
https://www.ncbi.nlm.nih.gov/pubmed/36357421
http://dx.doi.org/10.1038/s41467-022-34674-y
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author Jia, Zhimin
Qin, Xuetao
Chen, Yunlei
Cai, Xiangbin
Gao, Zirui
Peng, Mi
Huang, Fei
Xiao, Dequan
Wen, Xiaodong
Wang, Ning
Jiang, Zheng
Zhou, Wu
Liu, Hongyang
Ma, Ding
author_facet Jia, Zhimin
Qin, Xuetao
Chen, Yunlei
Cai, Xiangbin
Gao, Zirui
Peng, Mi
Huang, Fei
Xiao, Dequan
Wen, Xiaodong
Wang, Ning
Jiang, Zheng
Zhou, Wu
Liu, Hongyang
Ma, Ding
author_sort Jia, Zhimin
collection PubMed
description Hydrogen is increasingly being discussed as clean energy for the goal of net-zero carbon emissions, applied in the proton-exchange-membrane fuel cells (PEMFC). The preferential oxidation of CO (PROX) in hydrogen is a promising solution for hydrogen purification to avoid catalysts from being poisoned by the trace amount of CO in hydrogen-rich fuel gas. Here, we report the fabrication of a novel bimetallic Pt-Fe catalyst with ultralow metal loading, in which fully-exposed Pt clusters bonded with neighbor atomically dispersed Fe atoms on the defective graphene surface. The fully-exposed PtFe cluster catalyst could achieve complete elimination of CO through PROX reaction and almost 100% CO selectivity, while maintaining good stability for a long period. It has the mass-specific activity of 6.19 (mol(CO))*(g(Pt))(−1)*h(−1) at room temperature, which surpasses those reported in literatures. The exhaustive experimental results and theoretical calculations reveal that the construction of fully-exposed bimetallic Pt-Fe cluster catalysts with maximized atomic efficiency and abundant interfacial sites could facilitate oxygen activation on unsaturated Fe species and CO adsorption on electron-rich Pt clusters to hence the probability of CO oxidation, leading to excellent reactivity in practical applications.
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spelling pubmed-96497732022-11-15 Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification Jia, Zhimin Qin, Xuetao Chen, Yunlei Cai, Xiangbin Gao, Zirui Peng, Mi Huang, Fei Xiao, Dequan Wen, Xiaodong Wang, Ning Jiang, Zheng Zhou, Wu Liu, Hongyang Ma, Ding Nat Commun Article Hydrogen is increasingly being discussed as clean energy for the goal of net-zero carbon emissions, applied in the proton-exchange-membrane fuel cells (PEMFC). The preferential oxidation of CO (PROX) in hydrogen is a promising solution for hydrogen purification to avoid catalysts from being poisoned by the trace amount of CO in hydrogen-rich fuel gas. Here, we report the fabrication of a novel bimetallic Pt-Fe catalyst with ultralow metal loading, in which fully-exposed Pt clusters bonded with neighbor atomically dispersed Fe atoms on the defective graphene surface. The fully-exposed PtFe cluster catalyst could achieve complete elimination of CO through PROX reaction and almost 100% CO selectivity, while maintaining good stability for a long period. It has the mass-specific activity of 6.19 (mol(CO))*(g(Pt))(−1)*h(−1) at room temperature, which surpasses those reported in literatures. The exhaustive experimental results and theoretical calculations reveal that the construction of fully-exposed bimetallic Pt-Fe cluster catalysts with maximized atomic efficiency and abundant interfacial sites could facilitate oxygen activation on unsaturated Fe species and CO adsorption on electron-rich Pt clusters to hence the probability of CO oxidation, leading to excellent reactivity in practical applications. Nature Publishing Group UK 2022-11-10 /pmc/articles/PMC9649773/ /pubmed/36357421 http://dx.doi.org/10.1038/s41467-022-34674-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Jia, Zhimin
Qin, Xuetao
Chen, Yunlei
Cai, Xiangbin
Gao, Zirui
Peng, Mi
Huang, Fei
Xiao, Dequan
Wen, Xiaodong
Wang, Ning
Jiang, Zheng
Zhou, Wu
Liu, Hongyang
Ma, Ding
Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title_full Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title_fullStr Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title_full_unstemmed Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title_short Fully-exposed Pt-Fe cluster for efficient preferential oxidation of CO towards hydrogen purification
title_sort fully-exposed pt-fe cluster for efficient preferential oxidation of co towards hydrogen purification
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9649773/
https://www.ncbi.nlm.nih.gov/pubmed/36357421
http://dx.doi.org/10.1038/s41467-022-34674-y
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