Citation
Ca. Lucas et al., Surface structure and relaxation during the oxidation of carbon monoxide on Pt-Pd bimetallic surfaces, SURF SCI, 479(1-3), 2001, pp. 241-246
Citations number
25
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028
→ ACNP
Volume
479
Issue
1-3
Year of publication
2001
Pages
241 - 246
Database
ISI
SICI code
0039-6028(20010520)479:1-3<241:SSARDT>2.0.ZU;2-G
Abstract
The atomic structure and surface relaxation of Pd monolayer on Pt(1 1 1) ha
s been studied by surface X-ray scattering, in an aqueous environment under
electrostatic potential control, during the adsorption and oxidation of ca
rbon monoxide. The results show that the Pd Pt layer spacing contracts at t
he onset of CO oxidation before the Pd adlayer forms an oxide structure tha
t is incommensurate with the Pt lattice. Both the oxide formation and the l
attice contraction are fully reversible over many cycles of the applied ele
ctrode potential. (C) 2001 Elsevier Science B.V. All rights reserved.