Adsorption structures of no on pt(111) studied by the near edge x-ray absorption fine structure spectroscopy

Ping Zhu, Toru Shimada, Hiroshi Kondoh, Ikuyo Nakai, Masanari Nagasaka, Toshiaki Ohta

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24 Citations (Scopus)

Abstract

Near edge X-ray absorption fine structure (NEXAFS) spectra were measured and analyzed to reveal the adsorption structures of NO on Pt(111) at 290 and 230 K. N K-edge NEXAFS spectra show a single π* resonance at 290 K, while they exhibit double peaks at 230 K. Simple polarization analysis cannot be applied to such a complicated system. Simulations based on the multiple scattering theory confirmed that NO is uniquely adsorbed at the hollow site at 290 K and there are two kinds of adsorption species at 230 K: one at atop site with a tilt angle of about 50° and another at hollow site with upright direction. They are in close agreement with the results by recent LEED I/V analysis.

Original languageEnglish
Pages (from-to)232-242
Number of pages11
JournalSurface Science
Volume565
Issue number2-3
DOIs
Publication statusPublished - 2004 Sep 10

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Keywords

  • Chemisorption
  • Near edge extended X-ray absorption fine structure (NEXAFS)
  • Nitrogen oxides
  • Platinum
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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