61Ni synchrotron-radiation-based Mössbauer absorption spectroscopy of Ni nanoparticle composites

Ryo Masuda, Hirokazu Kobayashi, Yoshimasa Aoyama, Makina Saito, Shinji Kitao, Hiroki Ishibashi, Shuichi Hosokawa, Takaya Mitsui, Yoshitaka Yoda, Hiroshi Kitagawa, Makoto Seto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We obtained energy-domain 61Ni synchrotron-radiation-based Mössbauer absorption spectra of three materials that relate to nanoparticles: Ni2(C8O6H2) metal-organic frameworks (MOFs), Ni nanoparticles synthesized by complete heat decomposition of the MOFs, and the composites of Ni nanoparticles and the MOFs synthesized by partial decomposition of the MOFs. The 61Ni abundance of all the samples was not enriched but we were successfully able to obtain their spectra in 1 day or less, by using a highly efficient measurement system where the internal conversion electrons from energy standard 61Ni86V14 foil were detected. Although both nanoparticle constituent and MOF constituent in the composites included Ni atoms, the Mössbauer parameters of the Ni nanoparticle constituent could be evaluated; the magnetic hyperfine field of the Ni nanoparticle constituent in the composites was different from that of the Ni nanoparticles obtained by the complete heat decomposition. This difference implied that the 3d and/or 4s electron configuration of the nanoparticle constituent were affected by the MOF constituent in the composites.

Original languageEnglish
Article number11
JournalHyperfine Interactions
Volume239
Issue number1
DOIs
Publication statusPublished - 2018 Dec 1
Externally publishedYes

Keywords

  • Composites of nanoparticles
  • Metal-organic frameworks
  • Nanoparticles
  • Ni
  • Nuclear resonant scattering
  • Synchrotron-radiation-based Mössbauer absorption spectroscopy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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