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  Water structure near the surface of Weyl semimetals as catalysts in photocatalytic proton reduction

Gujt, J., Zimmer, P., Zysk, F., Süß, V., Felser, C., Bauer, M., et al. (2020). Water structure near the surface of Weyl semimetals as catalysts in photocatalytic proton reduction. Structural Dynamics, 7(3): 034101, pp. 1-6. doi:10.1063/4.0000008.

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Gujt, Jure1, Autor
Zimmer, Peter1, Autor
Zysk, Frederik1, Autor
Süß, Vicky2, Autor           
Felser, Claudia3, Autor           
Bauer, Matthias1, Autor
Kuehne, Thomas D.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: In this work, second-generation Car-Parrinello-based mixed quantum-classical mechanics molecular dynamics simulations of small nanoparticles of NbP, NbAs, TaAs, and 1T-TaS2 in water are presented. The first three materials are topological Weyl semimetals, which were recently discovered to be active catalysts in photocatalytic water splitting. The aim of this research was to correlate potential differences in the water structure in the vicinity of the nanoparticle surface with the photocatalytic activity of these materials in light induced proton reduction. The results presented herein allow explaining the catalytic activity of these Weyl semimetals: the most active material, NbP, exhibits a particularly low water coordination near the surface of the nanoparticle, whereas for 1T-TaS2, with the lowest catalytic activity, the water structure at the surface is most ordered. In addition, the photocatalytic activity of several organic and metalorganic photosensitizers in the hydrogen evolution reaction was experimentally investigated with NbP as the proton reduction catalyst. Unexpectedly, the charge of the photosensitizer plays a decisive role for the photocatalytic performance.

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Sprache(n): eng - English
 Datum: 2020-05-122020-05-12
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1063/4.0000008
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Titel: Structural Dynamics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Melville, NY : American Institute of Physics
Seiten: - Band / Heft: 7 (3) Artikelnummer: 034101 Start- / Endseite: 1 - 6 Identifikator: ISSN: 2329-7778
CoNE: https://pure.mpg.de/cone/journals/resource/2329-7778