skip to main content

SciTech ConnectSciTech Connect

Title: The valence band structure of Ag{sub x}Rh{sub 1–x} alloy nanoparticles

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{sub 0.5}Rh{sub 0.5} alloy NPs near the Fermi edge was strikingly similar to that of Pd NPs, whose superior hydrogen-storage properties are well known.
Authors:
 [1] ;  [2] ;  [1] ;  [2] ;  [3] ; ;  [4] ;  [3] ; ;  [4] ;  [3] ;  [5] ;  [4] ;  [3] ;  [3] ;
  1. Synchrotron X-ray Station at SPring-8, National Institute for Materials Science (NIMS), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)
  2. (CREST), Japan Science and Technology Agency (JST), 7 Goban-cho, Chiyoda-ku, Tokyo 102-0076 (Japan)
  3. (Japan)
  4. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 7 Goban-cho, Chiyoda-ku, Tokyo 102-0076 (Japan)
  5. Surface Chemical Analysis Group, Nano Characterization Unit, NIMS, 1-2-1 Sengen, Tsukuba 305-0047 (Japan)
Publication Date:
OSTI Identifier:
22350918
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BINARY ALLOY SYSTEMS; COMPUTERIZED SIMULATION; ELECTRONIC STRUCTURE; FCC LATTICES; HARD X RADIATION; HYDROGEN STORAGE; NANOPARTICLES; PHOTOELECTRON SPECTROSCOPY; SPECTRA