Vibrational spectroscopy of imperfect CO/Pd(111) surfaces obtained by adsorption between 150 and 230 K

Authors
Bourguignon, B Carrez, S Dragnea, B Dubost, H
Citation
B. Bourguignon et al., Vibrational spectroscopy of imperfect CO/Pd(111) surfaces obtained by adsorption between 150 and 230 K, SURF SCI, 418(1), 1998, pp. 171-180
Citations number
16
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028 → ACNP
Volume
418
Issue
1
Year of publication
1998
Pages
171 - 180
Database
ISI
SICI code
0039-6028(19981127)418:1<171:VSOICS>2.0.ZU;2-W
Abstract
Sum frequency generation and IR absorption spectra of CO adsorbed on Pd(111 ) are reported. Adsorption of CO in the surface temperature range 150-230 K results in the appearance of extra peaks in the spectral range of the CO s tretching vibration. The conditions of appearance of these peaks, and their stability, are investigated. The extra peaks are assigned to sites at anti phase domain boundaries, in which CO is less bonded than in the regular sit es of the domains. (C) 1998 Elsevier Science B.V. All rights reserved.