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  Highly active single-layer MoS2 catalyst synthesized by swift heavy ion irradiation

Madauß, L., Zegkinoglou, I., Muiños, H. V., Choi, Y.-W., Kunze, S., Zhao, M.-Q., et al. (2018). Highly active single-layer MoS2 catalyst synthesized by swift heavy ion irradiation. Nanoscale, 10(48), 22908-22916. doi:10.1039/C8NR04696D.

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2018
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 Urheber:
Madauß, Lukas1, Autor
Zegkinoglou, Ioannis2, Autor
Muiños, Henrique Vázquez3, Autor
Choi, Yong-Wook2, Autor
Kunze, Sebastian2, Autor
Zhao, Mang-Qiang4, Autor
Naylor, Carl H.4, Autor
Ernst, Philipp1, Autor
Pollmann, Erik1, Autor
Ochedowski, Oliver1, Autor
Lebius, Henning5, Autor
Benyagoub, Abdenacer5, Autor
Ban-d`Etat, Brigitte5, Autor
Johnson, A. T. Charlie4, Autor
Djurabekova, Flyura3, Autor
Roldan Cuenya, Beatriz2, 6, Autor           
Schleberger, Marika1, Autor
Affiliations:
1Faculty of Physics and CENIDE, Universität Duisburg-Essen, 47057 Duisburg, Germany , ou_persistent22              
2Department of Physics, Ruhr-Universität Bochum, 44780 Bochum, Germany, ou_persistent22              
3Department of Physics, University of Helsinki, P.O. Box 43, 00014, Helsinki, Finland, ou_persistent22              
4Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, USA, ou_persistent22              
5CIMAP,(CEA-CNRS-ENSICAEN-UCN), blvd Henri Becquerel, Caen, France, ou_persistent22              
6Interface Science, Fritz Haber Institute, Max Planck Society, ou_2461712              

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 Zusammenfassung: Two-dimensional molybdenum-disulfide (MoS2) catlysts can achieve high catalytic activity for the hydrogen evolution reaction upon appropriate modification of their surface. The intrinsic inertness of the compound´s basal planes can be overcome by either increasing the number of catalytically active edge sites or by enhancing the activity of the basal planes via controlled creation of sulfur vacancies. Here, we report a novel method of activating the MoS2 surface in this respect using swift heavy ion irradiation. The creation of nanometer-scale structures by the ion beam, in combination with the partial sulfur depletion of the basal planes, leads to a large increase of the number of low-coordinated Mo atoms, which can form bonds with adsorbing species. This results in a decreased onset potential for hydrogen evolution, as well as in a significant enhance of the electrochemical current density by over 160% as compared to an identical but non-irradiated MoS2 surface.

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Sprache(n): eng - English
 Datum: 2018-06-092018-10-252018-11-05
 Publikationsstatus: Online veröffentlicht
 Seiten: 9
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1039/C8NR04696D
 Art des Abschluß: -

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Titel: Nanoscale
  Kurztitel : Nanoscale
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Cambridge, UK : Royal Society of Chemistry
Seiten: 9 Band / Heft: 10 (48) Artikelnummer: - Start- / Endseite: 22908 - 22916 Identifikator: ISSN: 2040-3364
CoNE: https://pure.mpg.de/cone/journals/resource/2040-3364