X-ray photoelectron spectroscopy study of water adsorption on BaF2(111) and CaF2(111) surfaces

Yutong Wu, Jeffery T. Mayer, Eric Garfunkel, Theodore E. Madey

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Abstract

The adsorption of water on BaF2(111) and CaF2(111) surfaces has been studied by X-ray photoelectron spectroscopy (XPS). Oxide and hydroxyl species are observed to form reactively on both surfaces with low sticking probability. XPS results imply an exchange of oxygen for fluorine at the surface. There is no evidence for molecularly adsorbed H2O species at 300 K with exposures up to 107 langmuirs in vacuum on either surface.

Original languageEnglish
Pages (from-to)1482-1487
Number of pages6
JournalLangmuir
Volume10
Issue number5
Publication statusPublished - 1994

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

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