In situ vibrational study of SiO2/liquid interfaces

H. Fukidome, O. Pluchery, K. T. Queeney, Y. Caudano, K. Raghavachari, M. K. Weldon, E. E. Chaban, S. B. Christman, H. Kobayashi, Y. J. Chabal

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The surface of SiO2 in contact with a liquid has been studied in situ by Fourier transform infrared spectroscopy, electrochemistry and ab initio quantum chemical calculations. Experimental issues arising from the cell designed have been addressed, notably the influence of the medium above the SiO2 film on the line shape of the Si-O vibrations. Using electrical potential control of the surface with electrochemistry, the hydrated states of the SiO2 surface have been identified, featuring a neutral ≡31y SiOH species and pentavalent ≡Si(OH)OH- anionic centers.

Original languageEnglish
Pages (from-to)498-502
Number of pages5
JournalSurface Science
Volume502-503
DOIs
Publication statusPublished - 2002 Apr 10
Externally publishedYes

Keywords

  • Ab initio quantum chemical methods and calculations
  • Infrared absorption spectroscopy
  • Silicon oxides
  • Solid-liquid interfaces

ASJC Scopus subject areas

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

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