Structural analysis of nano-sized-Pd/ZrO2 composite after H(D) absorption

Yoshinori Arachi, Shuichi Emura, Akira Omura, Masanobu Nunogaki, Takeshi Asai, Shinichi Yamaura, Akihisa Inoue, Yoshiaki Arata

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Structural analysis of high density H(D) absorbed Pd particles with 5 nm dispersed ZrO2 has been carried out using XAFS (X-ray Absorption Fine Structure) techniques. X-ray absorption spectra around the Pd K-absorption edge were observed and analyzed. The Pd-Pd bonding distance was enlarged by 0.08 Å during absorption of deuterium, and it completely reverted to its original state with the release of deuterium while maintaining the crystal lattice symmetry. These changes provide evidence that deuterium locates not on the surface of the Pd particle, but rather within the Pd crystal lattice. The hydrogen absorption mechanism will also be discussed.

    Original languageEnglish
    Pages (from-to)1861-1864
    Number of pages4
    JournalSolid State Ionics
    Volume177
    Issue number19-25 SPEC. ISS.
    DOIs
    Publication statusPublished - 2006 Oct 15

    Keywords

    • Hydrogen absorption
    • Nano-sized composite
    • XAFS

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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  • Cite this

    Arachi, Y., Emura, S., Omura, A., Nunogaki, M., Asai, T., Yamaura, S., Inoue, A., & Arata, Y. (2006). Structural analysis of nano-sized-Pd/ZrO2 composite after H(D) absorption. Solid State Ionics, 177(19-25 SPEC. ISS.), 1861-1864. https://doi.org/10.1016/j.ssi.2006.04.019