Abstract
IR spectra of CO 2 and N 2O adsorbed on C 60, graphite and diamond films were recorded at low temperatures. The IR spectra of adsorbed CO 2 and N 2O indicated that only one adsorption site was present on the three allotropes. When CO 2 was adsorbed on C 60 and graphite, removal of degeneracy of the ν 2 vibration mode occurred. The absorption band appeared as a doublet. When N 2O was adsorbed on the three adsorbents, there was no removal of degeneracy of the ν 2 vibration mode, which appeared as a single band. Large spectral shifts of the ν 3 band and longer desorption times were recorded for both CO 2 and N 2O adsorbed on C 60, relative to the small spectral shifts and shorter desorption times recorded on graphite and diamond. These results indicate a strong interaction of these adsorbates with C 60 compared to the other carbon allotropes.
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