I&EC 211 |
| Prashant V. Kamat and Tustomu Hirakawa. Notre Dame Radiation Laboratory, University of Notre Dame, Department of Chemical and Biomolecular Engineering, Notre Dame, IN 46556-0579 |
| Efforts are being made to improve the selectivity and activity of semiconductor photocatalysts for environmental remediation. In this context, semiconductor-metal nanocomposites have been found to be useful for environmental remediation. Charge equilibration between semiconductor and metal nanoparticles shifts Fermi-level to more negative potentials, thus improving their energetics. We have now prepared metal core and TiO2 shell nanoparticles for improving photocatalytic efficiency. Photoinduced charge transfer processes that control the activity of Au@TiO2/Au and Ag@TiO2/Ag will be discussed. Ways to utilize semiconductor nanostructures effectively in advanced oxidation processes will also be presented. |
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Nanotechnology and the Environment
8:30 AM-11:15 AM, Wednesday, March 31, 2004 Marriott -- Orange County 1, Oral
Division of Industrial and Engineering Chemistry |