AVS 52nd International Symposium
    Surface Science Thursday Sessions
       Session SS3-ThM

Paper SS3-ThM11
The Photoemission Study of Oxygen Adsorbate on Pt@sub 3@Ni (100), (110), and (111) Surfaces

Thursday, November 3, 2005, 11:40 am, Room 203

Session: Reactivity of Bimetallic Surfaces
Presenter: B.S. Mun, Lawrence Berkeley National Laboratory
Authors: B.S. Mun, Lawrence Berkeley National Laboratory
M. Watanabe, Lawrence Berkeley National Laboratory
M. Rossi, Lawrence Berkeley National Laboratory
V. Stamenkovic, Lawrence Berkeley National Laboratory
N.M. Markovic, Lawrence Berkeley National Laboratory
P.N. Ross, Lawrence Berkeley National Laboratory
Correspondent: Click to Email
The electronic structures of oxygen covered surfaces on Pt@sub 3@Ni (100), (110), and (111) alloys are studied with photoemission spectroscopy. The positions of local d-band center and the widths from valence band density of state (DOS) measurements are compared before and after the oxygen adsorption at various temperatures. The correlations between the electronic structures of oxygen-adsorbed surfaces and the chemical properties are discussed. Modified electronic structures of Pt@sub 3@Ni surfaces are also compared to those of Pt single crystals surfaces. The density functional theory calculation is carried out for the comparison of the experimental results to the theory.