COLL 491 |
| We demonstrate the efficiency of semiconductor/metal nanoparticle interfaces for converting solar energy and storing it as chemical energy. Nanoscale metallic particles in the 1-2 nm size range were used due to their unique electronic and catalytic properties. Within this size range, the electronic properties transition from a bulk-like continuum of electronic states to molecule-like, discrete electronic orbital levels. We have investigated the electrochemical quantized double-layer (QDL) charging differences of 1-2 nm palladium and ruthenium nanoparticles and further investigated their charging and discharging at large band-gap semiconductor interfaces. The results are paramount toward understanding and developing advanced materials for electronic devices as well as in catalysis. Synthetic parameters, nanoparticle characterization, and electrochemical properties of the metal nanoclusters, will be presented. |
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Interfacial Electron Transfer and Solar Energy Conversion: From Molecules to Nanomaterials
2:00 PM-5:00 PM, Thursday, April 10, 2008 Morial Convention Center -- Rm. 226, Oral
Division of Colloid & Surface Chemistry |