New study of CO adsorption at low temperature (90 K) on Pt (111) by EELS
- 15 December 1979
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 71 (12), 4812-4816
- https://doi.org/10.1063/1.438320
Abstract
We have performed a new study of the vibrational modes of CO adsorbed at low temperature (90 K) on Pt(111). As in previous work a sequential occupation of top and bridge sites is observed. At a certain bridge site coverage, however, a new vibrational mode with a frequency of 720 cm−1 appears. The mode is not observed at room temperature since sufficiently high coverages are not achieved there. The appearance of the 720 cm−1 mode is attributed to the C–Pt asymmetric stretching vibration becoming dipole active at higher coverages when, according to LEED results, an out‐of‐registry CO overlayer is formed.Keywords
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