Controlling the Photoactivity of Nanoparticles

	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.
	View PDF of paper
ISBN:	0-9728422-9-2
Pages:	561
Hardcopy:	$79.95

Order:	Mail/Fax Form
Special:	3 CD Set — 15% off with Free Shipping
Up