Exploring the Structure-Function Relationship in Multifunctional Nanoparticles

Keywords:
nanoparticle, zinc oxide, doped, channelling

Abstract:
Nanoparticles of ZnO are increasingly being used as a pigment and UV absorber in personal care products (e.g. sunscreens), coatings and paints, predominantly because their absorbance efficiency increases with decreasing particle size. However, whilst protection against UV may be maintained at smaller particle sizes, the rate at which hydroxyl radicals are generated increases, due to the inherent photo-activity of these materials. This paper shows that photoactivity can be reduced (by over an order of magnitude) by doping the material with small amounts metallic cations (

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Nanotech 2005 Conference Program Abstract