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  Continuous Phase Regulation of a Pd-Te Hexagonal Nanoplate Library

Huang, X., Xu, B., Feng, J., Hu, S., Dou, W., Yang, T., et al. (2023). Continuous Phase Regulation of a Pd-Te Hexagonal Nanoplate Library. Journal of the American Chemical Society, 145(51): 28021, pp. 28010. doi:10.1021/jacs.3c08116.

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 Urheber:
Huang, X.1, Autor
Xu, B.1, Autor
Feng, J.1, Autor
Hu, S.1, Autor
Dou, W.1, Autor
Yang, T.1, Autor
Zhan, C.1, Autor
Liu, S.1, Autor
Ji, Y.1, Autor
Li, Y.1, Autor
Pao, C.-W.1, Autor
Hu, Zhiwei2, Autor           
Shao, Q.1, Autor
Huang, X.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Schlagwörter: Binary alloys, Electrolytic reduction, Nanostructured materials, Nanostructures, Phase modulation, Precious metals, Tellurium compounds, Catalytic performance, Continuous phase, Continuous-phase modulation, Hexagonal phasis, Nanoplates, Oxygen reduction reaction, Rhombohedral phase, Rhombohedral phasis, Structure performance, Two-dimensional structures, Catalysis
 Zusammenfassung: Phase regulation of noble metal-based nanomaterials provides a promising strategy for boosting the catalytic performance. However, realizing the continuous phase modulation in two-dimensional structures and unveiling the relevant structure-performance relationship remain significant challenges. In this work, we present the first example of continuous phase modulation in a library of Pd-Te hexagonal nanoplates (HNPs) from cubic-phase Pd4Te, rhombohedral-phase Pd20Te7, rhombohedral-phase Pd8Te3, and hexagonal-phase PdTe to hexagonal-phase PdTe2. Notably, the continuous phase regulation of the well-defined Pd-Te HNPs enables the successful modulation of the distance between adjacent Pd active sites, triggering an exciting way for tuning the relevant catalytic reactions intrinsically. The proof-of-concept oxygen reduction reaction (ORR) experiment shows a Pd-Pd distance-dependent ORR performance, where the hexagonal-phase PdTe HNPs present the best electrochemical performance in ORR (mass activity and specific activity of 1.02 A mg-1Pd and 1.83 mA cm-2Pd at 0.9 V vs RHE). Theoretical investigation reveals that the increased Pd-Pd distance relates to the weak *OH adsorption over Pd-Te HNPs, thus contributing to the remarkable ORR activity of PdTe HNPs. This work advances the phase-controlled synthesis of noble metal-based nanostructures, which gives huge impetus to the design of high-efficiency nanomaterials for diverse applications. © 2023 American Chemical Society.

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Sprache(n): eng - English
 Datum: 2023-12-142023-12-14
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1021/jacs.3c08116
 Art des Abschluß: -

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Titel: Journal of the American Chemical Society
  Andere : JACS
  Kurztitel : J. Am. Chem. Soc.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: - Band / Heft: 145 (51) Artikelnummer: 28021 Start- / Endseite: 28010 Identifikator: ISSN: 0002-7863
CoNE: https://pure.mpg.de/cone/journals/resource/954925376870