New study of CO adsorption at low temperature (90 K) on Pt (111) by EELS
1979; American Institute of Physics; Volume: 71; Issue: 12 Linguagem: Inglês
10.1063/1.438320
ISSN1520-9032
Autores Tópico(s)nanoparticles nucleation surface interactions
ResumoWe 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.
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