Zirconium-peroxo embedded in non-stoichiometric yttria stabilized zirconia (110) from first-principles

Seiji Takemoto, Tomofumi Tada

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Metal-peroxo species on oxides are recognized as important intermediates for catalytic reactions on oxides. In this work, surface structures of stoichiometric and non-stoichiometric yttria stabilized zirconia (YSZ) were investigated for the low index surfaces (111), (110), and (100) by using first principles electronic structure calculations, and the energetic stabilities of non-stoichiometric surfaces with respect to the stoichiometric ones were calculated as a function of oxygen chemical potential. In the oxygen-rich condition, a unique form of zirconium-peroxo embedded in the lattice oxygen sites was found in YSZ(110); the embedded peroxo was recently confirmed in experimental observations for TiO2 anatase (101) (M. Setvín et al., Science 341 (2013) 988) and cubic In2O3 (001) (D. R. Hagleitner et al., Phys. Rev. B 85 (2012) 115441). The electronic structure of the embedded peroxo found in O-rich YSZ(110) was analyzed in details by means of orbital energy diagrams and density of states.

本文言語英語
ページ(範囲)215-221
ページ数7
ジャーナルSolid State Ionics
285
DOI
出版ステータス出版済み - 2 1 2016
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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