High-resolution auger electron spectra of adsorbed NO, NH3 and N2 on sulphur-segregated and oxidized vanadium surfaces

Abstract

The absorption of NO, NH₃ and N₂ on oxidized and sulphur-segregated surfaces of vanadium polycrystalline foil has been studied using high-resolution Auger electron spectroscopy (HRAES). On the oxidized surface, four different types of adsorbed nitrogen species were detected, i.e. NO (a), NH_x(a), N₂(a) and N (a). On the other hand, on the sulphur-segregated surface, NO is adsorbed easily at room temperature, but NH₃ and N₂ were not adsorbed.