Title :
Synthesis and Photocatalytic Activity of Doped Zinc Oxide Nanoparticles
Author :
Dodd, Aaron ; McKinley, Allan ; Saunders, Martin ; Tsuzuki, Takuya
Author_Institution :
Sch. of Biomed., Biomolecular, & Chem. Sci., Western Australia Univ., Crawley, WA
Abstract :
In this study, we have investigated the effect of doping with cobalt and manganese oxide on the photocatalytic activity of nanoparticulate zinc oxide. Zinc oxide powders with controlled particle size, minimal agglomeration, and controlled chemical composition were manufactured by mechanochemical processing. The photocatalytic activity of the powders was measured using the spin trapping technique with electron paramagnetic resonance spectroscopy. It was found that the addition of cobalt oxide decreased the yield of photogenerated hydroxyl radicals. In contrast, doping with manganese oxide was found to substantially increase the rate of radical production.
Keywords :
EPR spectroscopy; catalysis; cobalt; doping; manganese compounds; nanoparticles; photochemistry; zinc compounds; ZnO:Co; ZnO:Mn2O3; controlled chemical composition; controlled particle size; electron paramagnetic resonance spectroscopy; mechanochemical synthesis; minimal agglomeration; nanoparticle synthesis; photocatalysis; photocatalytic activity; photogenerated hydroxyl radicals; spin trapping technique; Chemical processes; Cobalt; Doping; Electron traps; Manganese; Manufacturing processes; Nanoparticles; Powders; Size control; Zinc oxide;
Conference_Titel :
Nanoscience and Nanotechnology, 2006. ICONN '06. International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-4244-0452-5
Electronic_ISBN :
1-4244-0452-5
DOI :
10.1109/ICONN.2006.340534
