Abstract
An interesting daisy-like Y(OH)3:Eu microstructure was successfully prepared via a facile hydrothermal process employing potassium sodium tartrate (C4H4O6KNa) as a structure-directing agent for the first time. Y2O3:Eu with the same morphology was obtained by calcining Y(OH)3:Eu precursor at 800°C for 5h. Phase and morphology of the products were investigated by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) respectively. It was found that the concentrations of NaOH and C4H4O6KNa played crucial roles in controlling particle size and morphology of precursor. A possible formation mechanism of the novel microstructure was proposed. The daisy-like Y2O3:Eu microstructure had a stronger photoluminescence (PL) intensity than the microrod and reference nanoparticle.
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