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

doi:10.1016/j.ssi.2006.04.019

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 journal › Article › peer-review

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 language	English
Pages (from-to)	1861-1864
Number of pages	4
Journal	Solid State Ionics
Volume	177
Issue number	19-25 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.ssi.2006.04.019
Publication status	Published - 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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title = "Structural analysis of nano-sized-Pd/ZrO2 composite after H(D) absorption",

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 {\AA} 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.",

keywords = "Hydrogen absorption, Nano-sized composite, XAFS",

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

year = "2006",

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doi = "10.1016/j.ssi.2006.04.019",

language = "English",

volume = "177",

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journal = "Solid State Ionics",

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T1 - Structural analysis of nano-sized-Pd/ZrO2 composite after H(D) absorption

AU - Arachi, Yoshinori

AU - Emura, Shuichi

AU - Omura, Akira

AU - Nunogaki, Masanobu

AU - Asai, Takeshi

AU - Yamaura, Shinichi

AU - Inoue, Akihisa

AU - Arata, Yoshiaki

PY - 2006/10/15

Y1 - 2006/10/15

N2 - 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.

AB - 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.

KW - Hydrogen absorption

KW - Nano-sized composite

KW - XAFS

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