AVS 54th International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP22
Reactivity of Model Iron and Iron Oxide Surfaces and Nanoparticles with Chlorinated Hydrocarbons

Tuesday, October 16, 2007, 6:00 pm, Room 4C

Session: Surface Science Poster Session
Presenter: G.S. Parkinson, Pacific Northwest National Laboratory
Authors: G.S. Parkinson, Pacific Northwest National Laboratory
Z. Dohnalek, Pacific Northwest National Laboratory
R.S. Smith, Pacific Northwest National Laboratory
B.D. Kay, Pacific Northwest National Laboratory
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Iron and iron oxide surfaces and nanoparticles have been shown to be catalytically active in the destruction of chlorinated hydrocarbons in environmental remediation applications. We employ a combination of molecular beam and surface analytical techniques to synthesize and characterize model iron and iron oxide thin films grown on Pt(111) and supported nanoparticles deposited on FeO(111)/Pt(111). The chemical activity of these model catalysts is explored using temperature programmed desorption and X-ray photoelectron spectroscopy. The reactivity of a series of chlorinated methanes is explored both anhydrously and in the presence of coadsorbed water. The experimental methods, results, and their mechanistic implications will be presented.

The research described here was performed in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.