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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 6250-6255 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photoemission spectra of Ru3(CO)12 adsorbed on Cu(111) and its decomposition products induced by electron irradiation and annealing are reported. It is found that electron bombardment and subsequent annealing of Ru3(CO)12/Cu(111) lead to the formation of Cu–Ru bimetallic aggregates which exhibit similar features as those reported previously on polycrystalline Cu, that is that Ru–Cu aggregates are formed of which Ru atoms are at the core and the surface is wetted with Cu and there exist distinct interface states. The mechanism for the formation of the bimetallic Cu–Ru aggregates on Cu(111) is almost certainly one in which two-dimensional Ru aggregation occurs on the surface upon initial annealing (∼225 °C) followed by three-dimensional aggregation and wetting of the Ru cluster surface by Cu after further annealing at higher temperatures ((approximately-greater-than)450 °C). The interaction between Ru surface intermediates and Cu(111) before Cu wetting occurs is also examined with photoemission and SW–Xα calculations.
    Type of Medium: Electronic Resource
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