AVS 51st International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP48
XPS Study of Water on Cu(110)

Tuesday, November 16, 2004, 4:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: A. Nilsson, Stanford University
Authors: K. Andersson, Stockholm University, Sweden
A. Gomez, Stockholm University, Sweden
C. Glover, MAXLab Lund University, Sweden
L.G.M. Pettersson, Stockholm University, Sweden
A. Nilsson, Stanford University
H. Ogasawara, 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)), 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". The unit cell contains two water molecules, which are different in the interaction with respect to the metal surface. On the other hand, less is known about the behaviour of water on atomically rough surfaces (e.g. fcc(110)). An x-ray photoelectron spectroscopic (XPS) study was undertaken of the water/Cu(110)-system and we find that water adsorbs non-dissociatively on Cu(110) at temperatures below 165 K in contrast to a previous XPS study@footnote 1@. Above 165 K we find partial dissociation to take place. @FootnoteText@ @footnote 1@ Ch. Ammon, A. Bayer, H.-P. Steinruck and G. Held, Chem. Phys. Lett. 377 (2003) 163â?"169.