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  Carbon Monoxide as a Promoter of Atomically Dispersed Platinum Catalyst in Electrochemical Hydrogen Evolution Reaction

Kwon, H. C., Kim, M., Grote, J.-P., Cho, S. J., Chung, M. W., Kim, H., et al. (2018). Carbon Monoxide as a Promoter of Atomically Dispersed Platinum Catalyst in Electrochemical Hydrogen Evolution Reaction. Journal of the American Chemical Society, 140(47), 16198-16205. doi:10.1021/jacs.8b09211.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-D081-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-D082-F
Genre: Journal Article

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 Creators:
Kwon, Han Chang1, Author              
Kim, Minho2, Author              
Grote, Jan-Philipp3, Author              
Cho, Sung June4, Author              
Chung, Min Wook5, Author              
Kim, Haesol6, Author              
Won, Dahye7, Author              
Žeradjanin, Aleksandar R.3, 8, Author              
Mayrhofer, Karl Johann Jakob3, 8, 9, Author              
Choi, Minkee1, Author              
Kim, Hyungjun2, Author              
Choi, Chang Hyuck10, Author              
Affiliations:
1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
2Graduate School of EEWS, Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
3Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
4Department of Applied Chemical Engineering, Chonnam National University, Yongbong 300, Buk-gu, Gwangju, South Korea, ou_persistent22              
5School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 61005 Gwangju, South Korea, ou_persistent22              
6School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, South Korea, ou_persistent22              
7Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea, ou_persistent22              
8Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
9Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, ou_persistent22              
10School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, South Korea, ou_persistent22              

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Free keywords: Atoms; Carbon monoxide; Catalysis; Catalyst supports; Electrocatalysis; Hydrogen; Mass spectrometry; Reduction, Computational analysis; Counter-intuitive phenomenon; Electrochemical analysis; Hydrogen evolution reactions; Modified catalysts; Platinum catalysts; Structural identification; Water dissociation, Platinum
 Abstract: Carbon monoxide is widely known to poison Pt during heterogeneous catalysis owing to its strong donor-acceptor binding ability. Herein, we report a counterintuitive phenomenon of this general paradigm when the size of Pt decreases to an atomic level, namely, the CO-promoting Pt electrocatalysis toward hydrogen evolution reactions (HER). Compared to pristine atomic Pt catalyst, reduction current on a CO-modified catalyst increases significantly. Operando mass spectroscopy and electrochemical analyses demonstrate that the increased current arises due to enhanced H2 evolution, not additional CO reduction. Through structural identification of catalytic sites and computational analysis, we conclude that CO-ligation on the atomic Pt facilitates Hads formation via water dissociation. This counterintuitive effect exemplifies the fully distinct characteristics of atomic Pt catalysts from those of bulk Pt, and offers new insights for tuning the activity of similar classes of catalysts. Copyright © 2018 American Chemical Society.

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Language(s): eng - English
 Dates: 2018-11-28
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1021/jacs.8b09211
 Degree: -

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Title: Journal of the American Chemical Society
  Other : J. Am. Chem. Soc.
  Abbreviation : JACS
Source Genre: Journal
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Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 140 (47) Sequence Number: - Start / End Page: 16198 - 16205 Identifier: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870