Abstract
High quality monodisperse cerium(IV) oxide (CeO 2) particles with a particle size less than 2 nm can be synthesized easily in large scale by a hydrothermal hydrolysis reaction at 120 °C using (NH 4) 2Ce(NO 3) 6 as precursor in the presence of a double hydrophilic block copolymer. The nanoparticles show a strong blue emission with an intense peak at 425 nm. With dilution of the solution, an obvious violet emission was observed at room temperature with concentration-dependent blue-shift characteristics.
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