Hydrothermal Synthesis and Optical Properties of the Monodisperse Spindle-Shaped CeO2 Microstructures

Resumo

The monodisperse spindle-shaped CeO₂ microstructures with irregular surface and the sharp ends have been successfully synthesized via a simple hydrothermal method. XRD, SEM, XPS, Raman scattering and photoluminescence (PL) spectrum were employed to characterize the samples. The results showed that the spindle-shaped CeO₂ have a fluorite cubic structure and there are Ce³⁺ ions and oxygen vacancies in surface of samples. The synthesized CeO₂ shows excellent room temperature optical properties, which is likely associated with Ce³⁺ ions and oxygen vacancies in the spindle-shaped CeO₂ samples.