Adsorption of CO on V-Rh(111)(2×2) Surface
نویسندگان
چکیده
We prepared a new V-Rh(111) alloy with (2×2) surface geometry. The alloy system and the adsorption of CO were investigated by the photoelectron spectroscopy of the valence and core states using synchrotron radiation, and by temperature-programmed thermal desorption spectroscopy (TPD). The obtained results indicate that the vanadium atoms in the prepared alloy were situated mainly in the subsurface region. A distinct localisation of the rhodium valence states was observed upon alloying with vanadium, which was accompanied by a small decrease of activation energy of the CO desorption. TPD spectra revealed a new desorption peak at the alloy surface in comparison with the pure Rh(111) surface.
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