Chemisorbed oxygen on Au(111) produced by a novel route: Reaction in condensed films of NO2 + H2O

Jiang Wang, Michael R. Voss, Harald Busse, Bruce E. Koel

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

We report a facile, low-temperature reaction between condensed-phase NO2 and H2O that leads ultimately to the formation of a large concentration (θ0 = 0.42 monolayers) of adsorbed oxygen adatoms on a Au(111) surface. This reaction represents a novel route to generate surface oxygen on Au that can be utilized in fundamental studies of oxidation catalysis over Au such as low-temperature CO oxidation and the operation of Au converter tubes used in redox chemiluminesence detectors for atmospheric NOx. Also, this reaction may be relevant to heterogeneous processes occurring on ice particles in stratospheric clouds. This reaction is not specifically catalyzed by the Au(111) surface or by the defects present on the Au surface, and so this reaction may have some general utility for facile oxidation of unreactive surfaces.

Original languageEnglish (US)
Pages (from-to)4693-4696
Number of pages4
JournalJournal of Physical Chemistry B
Volume102
Issue number24
StatePublished - Jun 11 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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