IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Surface Science Tuesday Sessions
       Session SS2-TuM

Paper SS2-TuM8
Bonding of Water to Metal Surfaces Studied with Core-level Spectroscopies

Tuesday, October 30, 2001, 10:40 am, Room 122

Session: Water at Surfaces
Presenter: H. Ogasawara, Uppsala University, Sweden
Authors: H. Ogasawara, Uppsala University, Sweden
D. Nordlund, Uppsala University, Sweden
B. Brena, University of Stockholm, Sweden
L.-Å. Näslund, Uppsala University, Sweden
M. Nagasono, Uppsala University, Sweden
L.G.M. Petterson, University of Stockholm, Sweden
A. Nilsson, Uppsala University, Sweden and Stanford University
Correspondent: Click to Email
The chemical interaction between water and a metal surface is important in many practical fields, including corrosion, electrochemistry, molecular environmental science and heterogeneous catalysis. On smooth metal surfaces, (e.g. fcc(111) or hcp(0001)), water molecules adsorb intact with strong intermolecular forces between the water molecules. This leads to the formation of a hexagonal two-dimensional ice lattice proposed as a "bilayer structure".@footnote 1@ The unit cell contains two water molecules, which are different in the interaction with respect to the metal surface. We have studied the water "bilayer structure" on Pt(111) with X-ray absorption and X-ray emission spectroscopies. These two techniques provide atom specific information about electronic structure. We have identified two different water-metal chemical bonds in the "bilayer structure". @FootnoteText@ @footnote 1@ P.A. Thiel and T.E. Madey, Surface Science Reports 7, 211 (1987).