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  Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst

Choi, C. H., Kim, M., Kwon, H. C., Cho, S. J., Yun, S., Kim, H.-T., et al. (2016). Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst. Nature Communications, 7: 10922. doi:10.1038/ncomms10922.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-286F-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-2870-9
Genre: Journal Article

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 Creators:
Choi, Chang Hyuck1, Author              
Kim, Minho2, Author              
Kwon, Han Chang3, Author              
Cho, Sung June4, Author              
Yun, Seongho3, Author              
Kim, Hee-Tak2, Author              
Mayrhofer, Karl J. J.1, 5, 6, Author              
Kim, Hyungjun2, Author              
Choi, Minkee3, Author              
Affiliations:
1Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
2Graduate School of EEWS, Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
3Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea, ou_persistent22              
4Department of Applied Chemical Engineering, Chonnam National University, Yongbong 300, Buk-gu, Gwangju, South Korea, ou_persistent22              
5Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
6Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany , ou_persistent22              

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Free keywords: EMTREE drug terms: carbon; graphene; hydrogen peroxide; nanoribbon; oxygen; platinum; sulfur; zeolite GEOBASE Subject Index: carbon; catalyst; degradation; dispersion; electrochemistry; nanoparticle; platinum; reduction; sulfur; three-dimensional modeling EMTREE medical terms: Article; catalysis; catalyst; chemical structure; degradation; dispersion; electrochemical analysis; molecular stability; reduction; scanning transmission electron microscopy; transmission electron microscopy; vapor; X ray photoelectron spectroscopy
 Abstract: Maximum atom efficiency as well as distinct chemoselectivity is expected for electrocatalysis on atomically dispersed (or single site) metal centres, but its realization remains challenging so far, because carbon, as the most widely used electrocatalyst support, cannot effectively stabilize them. Here we report that a sulfur-doped zeolite-templated carbon, simultaneously exhibiting large sulfur content (17 wt% S), as well as a unique carbon structure (that is, highly curved three-dimensional networks of graphene nanoribbons), can stabilize a relatively high loading of platinum (5 wt%) in the form of highly dispersed species including site isolated atoms. In the oxygen reduction reaction, this catalyst does not follow a conventional four-electron pathway producing H2O, but selectively produces H2O2 even over extended times without significant degradation of the activity. Thus, this approach constitutes a potentially promising route for producing important fine chemical H2O2, and also offers opportunities for tuning the selectivity of other electrochemical reactions on various metal catalysts.

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Language(s): eng - English
 Dates: 2016-03-08
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: ISI: 000371725400001
DOI: 10.1038/ncomms10922
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 10922 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723