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- W2004661918 abstract "The adsorption of O2 and initial step of oxidation have been investigated, mainly at room temperature, for three different α-CuZn (75%Cu/25%Zn) surfaces ((110), (100) and (111)) by XPS. XAES, LEED, CPD and HREELS. No superstructures were detected on the LEED patterns during O2 admission for the three faces, and from the beginning of adsorption Zn segregated to the surface. For (110), the interaction of oxygen follows the sequence: (1) dissociative chemisorption (up to ~ 20 L), accompanied by an increase of the work function and a single site occupancy as revealed by HREELS; (2) nucleation of ZnO only, indicated by a decrease of the work function, a shift of the Zn L3M45M45 Auger transition and an emergence of a vibration at 550 cm−1. corresponding to the surface phonon of ZnO. The (111) face follows the same scheme, except that the sticking coefficient for oxygen is very low. For (100), it is clear that two states of oxygen exist simultaneously, even at the beginning, as revealed by HREELS and CPD measurements. No copper oxides are ever detected, even after heat treatment. In addition, different bonding properties of OH groups on the three surfaces are reported." @default.
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- W2004661918 date "1983-04-01" @default.
- W2004661918 modified "2023-10-16" @default.
- W2004661918 title "Interaction of O2 with low index faces of α-CuZn" @default.
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- W2004661918 doi "https://doi.org/10.1016/0039-6028(83)90414-4" @default.
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