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MM: Fachverband Metall- und Materialphysik

MM 39: SYM Hydrogen in Materials: New Developments III

MM 39.1: Invited Talk

Thursday, February 28, 2008, 14:00–14:30, H 1058

Hydrogen Chemisorption to Clusters — •Gerd Gantefoer — Department of Physics, University of Konstanz, Germany

The properties of nanoclusters consisting of up to 100 atoms are different from the ones of the corresponding bulk materials. Their geometric and electronic structures change with each additional atom. As a consequence chemical properties also vary dramatically with size. The interaction of such nanoparticles with hydrogen exhibits a broad variety of new and unexpected effects. E.g., single hydrogen atoms behave like gold atoms if attached to a small Au cluster. The interaction of small Al clusters with atomic hydrogen results in the formation of a new, previously unknown family of Aluminum hydrides. These examples demonstrate, that chemistry of nanoclusters is different and provides a new approach to the problem of hydrogen storage.