Characterization of surface structure dependence for interactions of oxygen with well-defined platinum surfaces

  • Maire G
  • Légaré P
  • Lindauer G
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The interaction ofO2with clean stepped and smooth surfaces of platinum is studied by LEED, AES and ELS for gas pressures of 10-8to 760 Tort and crystal temperatures of 20°C to 600°C. A strong surface structure dependence upon the adsorption of OZ is shown by LEED. During the oxidation process we observed modification of the fine structure of the oxygen Auger peaks which gives information about the binding state of oxygen. ELS spectra changes upon O2adsorption are correlated to UPS studies. Working in the high pressure range also makes dissolution into the metal become an important phenomenon which induces the formation of platinum oxide "islands", as detected by LEED, AES and XPS. © 1979.

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  • G. Maire

  • P. Légaré

  • G. Lindauer

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