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), NHx(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.

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