A ZnO(40•1) surface, which was a stepped [4(10•0) x ()] surface containing a high density of anion vacancies was prepared. When compared with the non-polar (10•0) surface, the (40•1) surface adsorbed O2 and methanol more strongly, but CO2 more weakly. The decomposition products of methanol were different on these two surfaces.

Chemical Properties of Anion Vacancies on Zinc Oxide. Cheng, W.H., Kung, H.H.: Surface Science Letters, 1981, 102[1], L21-8