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 | Nanotech 2004 Vol. 3
Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 3
Chapter 8: Nano Particles and Molecules |
| | Controlling the Photoactivity of Nanoparticles | | Authors: | P. Casey, S. Boskovic, K. Lawrence and T. Turney | | Affilation: | CSIRO(CMIT), AU | | Pages: | 370 - 374 | | Keywords: | nanoparticles, photoactivity, doped, zinc oxide | | Abstract: | The relative photoactivity of a series of nanophase ZnO powders with varying crystallite size (20-140nm) was determined using a chemical method based on the photobleaching behaviour of the stable radical 1,1-diphenyl-2-picrylhydrazyl (DPPH). It was confirmed that photoactivity behaviour increased (one to twofold) with decreasing crystallite size for crystallites <100nm. A further series of nanophase ZnO powders doped with metal ions showed that, depending on the type and/or level of dopant, the photoactivity behaviour of nanoparticles could be reduced by more than an order of magnitude. | | ISBN: | 0-9728422-9-2 |
| Pages: | 561 |
| Hardcopy: | $150.00 |
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