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

doi:10.1063/1.4896857

The valence band structure of Ag_xRh_1-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 journal › Article › peer-review

26 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 Ag_0.5Rh_0.5 alloy NPs near the Fermi edge was strikingly similar to that of Pd NPs, whose superior hydrogen-storage properties are well known.

Original language	English
Article number	153109
Journal	Applied Physics Letters
Volume	105
Issue number	15
DOIs	https://doi.org/10.1063/1.4896857
Publication status	Published - Oct 13 2014

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4896857

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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.",

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AU - Yang, Anli

AU - Sakata, Osami

AU - Kusada, Kohei

AU - Yayama, Tomoe

AU - Yoshikawa, Hideki

AU - Ishimoto, Takayoshi

AU - Koyama, Michihisa

AU - Kobayashi, Hirokazu

AU - Kitagawa, Hiroshi

PY - 2014/10/13

Y1 - 2014/10/13

N2 - 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.

AB - 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.

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The valence band structure of Ag_xRh_1-x alloy nanoparticles

Abstract

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