Raman Spectra of CO, H2and O2Adsorbed on Ni(111)

Abstract
Experimental results are discussed for laser Raman spectra which are obtained from Ni(lll) after this surface is exposed to CO, H2 and O2 in the 300°C temperature region. A major Raman band is observed at 80 cm−1. Intensity variations in this band are shown with respect to CO, H2 and O2 exposure and evacuation. Possible surface species are discussed which could produce the observed spectra and they are compared with graphitic chemilayers which have been observed in similar adsorption studies.
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