Ag growth on Mo„112...–Oa and MoO2 surfaces
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چکیده
The growth of Ag clusters on preadsorbed oxygen and oxide-covered Mo~112! has been investigated using scanning tunneling microscopy ~STM!. The objective of these experiments is the synthesis of adjacent areas on a surface with distinctly different metal–support interactions in order to investigate the relationship between the morphology of a supported metal cluster and the strength of the cluster–support interaction. The STM results show that more highly dispersed Ag clusters with a greater number density are obtained on that surface that interacts to a greater extent with the metal. Heating leads to the formation of two-dimensional–Ag nanostructures on oxygen-free Mo~112! ~strong metal–support interaction! and three-dimensional cluster growth on oxide-covered Mo~112! ~relatively weak metal–support interaction!. © 2002 American Vacuum Society. @DOI: 10.1116/1.1501581#
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تاریخ انتشار 2002