The electronic structure of methanol covered TiO2(110) surfaces

Ken Onda, Bin Li, Jin Zhao, Hrvoje Petek

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

We report on the electronic structure rutile TiO2(1 1 0) surfaces following the exposure to methanol. Two-photon photoemission (2PP) spectra reveal a strong resonance at 2.2-2.4 eV above Fermi level, which gains maximum intensity at ∼1 ML coverage of methanol. From the coverage, temperature and emission angle dependence of the methanol induced spectral features and similarities to a related state on water covered TiO2(1 1 0) surfaces, we assign the resonance to charge transfer excitation from the reduced five-coordinate Ti5c+4-δ ions to hydroxyl groups on the bridging oxygen rows.

Original languageEnglish
Pages (from-to)32-37
Number of pages6
JournalSurface Science
Volume593
Issue number1-3
DOIs
Publication statusPublished - Nov 20 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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