Abstract
Ordered vanadium oxide films can be grown on an Au(111) substrate. These films are formed when an evaporated layer of metallic vanadium is oxidized and annealed in UHV. A √3 × √R30° LEED pattern is observed for submonolayer to multilayer coverages of vanadium oxide on Au(111), and AES shows that the vanadium in the film is in the +3 oxidation state. Hydrogen, ethanol, and ethylene adsorption on the oxide films was studied with temperature-programmed desorption. Oxidized molecules (H 2O, CO, and CO 2) were the primary desorption products. Oxygen became more difficult to extract as the vanadium oxide film was reduced during successive TPD experiments.
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