The valence band structure of AgxRh1-x alloy nanoparticles

Anli Yang, Osami Sakata, Kohei Kusada, Tomoe Yayama, Hideki Yoshikawa, Takayoshi Ishimoto, Michihisa Koyama, Hirokazu Kobayashi, Hiroshi Kitagawa

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)

    Abstract

    The valence band (VB) structures of face-centered-cubic Ag-Rh alloy nanoparticles (NPs), which are known to have excellent hydrogen-storage properties, were investigated using bulk-sensitive hard x-ray photoelectron spectroscopy. The observed VB spectra profiles of the Ag-Rh alloy NPs do not resemble simple linear combinations of the VB spectra of Ag and Rh NPs. The observed VB hybridization was qualitatively reproduced via a first-principles calculation. The electronic structure of the Ag0.5Rh0.5 alloy NPs near the Fermi edge was strikingly similar to that of Pd NPs, whose superior hydrogen-storage properties are well known.

    Original languageEnglish
    Article number153109
    JournalApplied Physics Letters
    Volume105
    Issue number15
    DOIs
    Publication statusPublished - Oct 13 2014

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy (miscellaneous)

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