Figure 7From: Synthesis, characterization, and magnetic properties of monodisperse CeO2 nanospheres prepared by PVP-assisted hydrothermal methodRoom temperature photoluminescence spectrum of CeO 2 nanospheres using Ce(NO 3 ) 3 ·6H 2 O as starting materials. The sample was dispersed in methanol and the excitation wavelength used in PL measurement was 290 nm.Back to article page