Homogeneous Precipitation of Dy2O3 Nanoparticles—Effects of Synthesis Parameters
The experimental parameters that control the size and size distribution of dysprosium oxide nanoparticles synthesized by homogeneous precipitation technique have been systematically investigated. The particles were characterized with respect to their size, shape, and thermal decomposition behavior. It was found that the precipitated particles were spherical, uniform in size, and amorphous, which upon heating in air, decomposed into the oxide form with no change in morphology. The size and size distribution of the particles showed strong dependence on the metal cation concentration ([Dy3+]) and weak dependence on urea concentration and aging time. In addition, the presence of chlorine ions (Cl−) was found to have significant effect on the growth and agglomeration of the particles. Aggregation mechanism as the growth mechanism is offered to explain the effects of these synthesis parameters on the morphology, size, and size distribution of dysprosium oxide particles.
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Document Type: Research Article
Publication date: 2007-03-01
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