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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., Won, D., Žeradjanin, A. R., Mayrhofer, K. J. J., Choi, M., Kim, H., & Choi, C. H. (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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アイテムのパーマリンク: https://hdl.handle.net/21.11116/0000-0002-D081-0 版のパーマリンク: https://hdl.handle.net/21.11116/0000-0002-D082-F
資料種別: 学術論文

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 作成者:
Kwon, Han Chang1, 著者           
Kim, Minho2, 著者           
Grote, Jan-Philipp3, 著者           
Cho, Sung June4, 著者           
Chung, Min Wook5, 著者           
Kim, Haesol6, 著者           
Won, Dahye7, 著者           
Žeradjanin, Aleksandar R.3, 8, 著者           
Mayrhofer, Karl Johann Jakob3, 8, 9, 著者           
Choi, Minkee1, 著者           
Kim, Hyungjun2, 著者           
Choi, Chang Hyuck10, 著者           
所属:
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              

内容説明

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キーワード: 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
 要旨: 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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言語: eng - English
 日付: 2018-11-28
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: 査読あり
 識別子（DOI, ISBNなど）: DOI: 10.1021/jacs.8b09211
 学位: -

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出版物 1

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出版物名: Journal of the American Chemical Society
  その他 : J. Am. Chem. Soc.
  省略形 : JACS
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: Washington, DC : American Chemical Society
ページ: - 巻号: 140 (47) 通巻号: - 開始・終了ページ: 16198 - 16205 識別子（ISBN, ISSN, DOIなど）: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870