Braun W, Steinrück HP, Held G (2005)
Publication Type: Journal article
Publication year: 2005
Original Authors: Braun W., Steinrück H.-P., Held G.
Publisher: Elsevier
Book Volume: 574
Pages Range: 193-204
DOI: 10.1016/j.susc.2004.10.029
A combination of photoelectron spectroscopy, temperature programmed desorption and low energy electron diffraction structure determinations have been applied to study the p(2 × 2) structures of pure hydrogen and co-adsorbed hydrogen and CO on Ni{1 1 1}. In agreement with earlier work atomic hydrogen is found to adsorb on fcc and hcp sites in the pure layer with H-Ni bond lengths of 1.74 Å. The substrate interlayer distances, d = 2.05 Å and d = 2.06 Å, are expanded with respect to clean Ni{1 1 1} with buckling of 0.04 Å in the first layer. In the co-adsorbed phase CO occupies hcp sites and only the hydrogen atoms on fcc sites remain on the surface. d is even further expanded to 2.08 Å with buckling in the first and second layer of 0.06 and 0.02 Å, respectively. The C-O, C-Ni, and H-Ni bond lengths are within the range of values also found for the pure adsorbates. © 2004 Elsevier B.V. All rights reserved.
APA:
Braun, W., Steinrück, H.-P., & Held, G. (2005). The surface geometry of carbonmonoxide and hydrogen co-adsorbed on Ni{1 1 1}. Surface Science, 574, 193-204. https://doi.org/10.1016/j.susc.2004.10.029
MLA:
Braun, Wolfgang, Hans-Peter Steinrück, and Georg Held. "The surface geometry of carbonmonoxide and hydrogen co-adsorbed on Ni{1 1 1}." Surface Science 574 (2005): 193-204.
BibTeX: Download