1. The Structure and Reactivity of PdO Surfaces
Eric I. Altman, Department of Chemical Engineering, Yale University
Motivation: Understand how oxidation affects catalytic activity and reaction mechanisms on transition metals.
Growth of epitaxial PdO model catalysts and characterization of their reactivity.
Surface Diffraction
Bulk Diffraction - XRD
Film grows smoothly and epitaxially for 7 nm, then roughens but remains epitaxial.
XPS indicates the changes are due to oxidation and reduction. Fully oxidized films are [110]-oriented PdO.
We have successfully grown well-ordered expitaxial PdO.
Reactivity measurements indicate that the films are inert for CO oxidation.