パラジウムナノ粒子の特異な水素吸蔵

• 秋葉 宙

  東京大学 物性研究所

• 古府 麻衣子

  東京大学 物性研究所

• 山室 修

  東京大学 物性研究所

書誌事項

タイトル別名

• Exceptional Hydrogen Absorption of Palladium Nanoparticles
• サイエンス記事 パラジウムナノ粒子の特異な水素吸蔵
• サイエンス キジ パラジウムナノ リュウシ ノ トクイ ナ スイソキュウゾウ

抄録

The nanometer-sized metals attract much attention since their physical and chemical properties are substantially different from those of bulk metals. In this work, neutron powder diffraction experiments on the nanoparticles of palladium deuteride, which is the most popular metal hydride, have been performed at 300, 150, and 44 K to investigate the position of the deuterium atoms in the fcc lattice of Pd. The Rietveld analysis revealed that D atoms are located at the tetrahedral (T) sites in addition to the octahedral (O) sites. This is in contrast to the result that only the O sites are occupied in bulk Pd and in other transition metals with the fcc lattice at ambient pressure and temperature. We guess that the T site occupation is due to the change in potential energy caused by the surface and/or distortion effects of nanoparticles.

収録刊行物

• 波紋

  波紋 27 (3), 95-99, 2017

  日本中性子科学会

キーワード

• Pd hydride
• Nanoparticles
• Neutron powder diffraction
• Rietveld analysis

詳細情報

• CRID: 1390845713024415488
• NII論文ID: 130007510617
• NII書誌ID: AA11905115
• DOI: 10.5611/hamon.27.3_95
• ISSN: 1884636X
• ISSN: 1349046X
• NDL書誌ID: 028470491
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028470491
• Web Site: https://www.jstage.jst.go.jp/article/hamon/27/3/27_95/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可