Size-selected clusters on solid surfaces

A review. The present crit. review examines the status of the research on supported, size-selected clusters with specific emphasis on their size-dependent phys. and chem. properties. The authors describe the most relevant exptl. methods with their advantages and drawbacks for the prodn. of size-selected clusters and look critically at the present evidence for soft-landing of the clusters onto solid surfaces. Growth and characterization of cluster support materials are surveyed and the important role of surface defects for the properties of the supported clusters is considered. Recent advances in the characterization of the supported, size-selected clusters with local and nonlocal surface science anal. tools are presented and a few illustrative examples for size effects are given. Of specific and possibly broad impact on heterogeneous catalysis, the authors consider the discovery of the size-dependence of chem. reactions on very small supported clusters where recent exptl. and theor. evidence indicates charge transfer from the support to the cluster. This charge transfer turns inactive clusters into active ones, opening new perspectives to tune catalytic processes on the nanoscale. [on SciFinder(R)]     «

A review. The present crit. review examines the status of the research on supported, size-selected clusters with specific emphasis on their size-dependent phys. and chem. properties. The authors describe the most relevant exptl. methods with their advantages and drawbacks for the prodn. of size-selected clusters and look critically at the present evidence for soft-landing of the clusters onto solid surfaces. Growth and characterization of cluster support materials are surveyed and the important...     »