Synthesis of Y2O3: Eu3+ Hollow Spheres Using Silica as Templates
来源期刊：JOURNAL OF RARE EARTHS2007年第4期
论文作者：Liu Guixia Dong Xiangting Wang Jinxian Hong Guangyan
Key words：nanostructure; luminescence materials; nanocomposites; optical properties; rare earths;
Abstract: The Y2O3:Eu3+ hollow spheres were synthesized using the template-mediated method. XRD patterns indicated that the broadened diffraction peaks resulted from nanocrystals in Y2O3:Eu3+ shells of hollow spheres. XPS spectra showed that the Y2O3:Eu3+ shells were linked with silica cores by a Si-O-Y chemical bond. SEM and TEM observations showed that the size of the SiO2/Y2O3:Eu3+ core-shell particle was about 100 nm, and the thickness of the Y2O3:Eu3+ hollow sphere was less than 5 nm. The photoluminescence spectra of the SiO2/Y2O3:Eu3+ core-shell materials and Y2O3:Eu3+ hollow spheres had red luminescent properties, and the broadened emission peaks came from nanocrystals composed of the Y2O3:Eu3+ shell.
Liu Guixia1，Dong Xiangting1，Wang Jinxian1，Hong Guangyan2
(1.School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China;
2.Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China)
Abstract:The Y2O3:Eu3+ hollow spheres were synthesized using the template-mediated method. XRD patterns indicated that the broadened diffraction peaks resulted from nanocrystals in Y2O3:Eu3+ shells of hollow spheres. XPS spectra showed that the Y2O3:Eu3+ shells were linked with silica cores by a Si-O-Y chemical bond. SEM and TEM observations showed that the size of the SiO2/Y2O3:Eu3+ core-shell particle was about 100 nm, and the thickness of the Y2O3:Eu3+ hollow sphere was less than 5 nm. The photoluminescence spectra of the SiO2/Y2O3:Eu3+ core-shell materials and Y2O3:Eu3+ hollow spheres had red luminescent properties, and the broadened emission peaks came from nanocrystals composed of the Y2O3:Eu3+ shell.
Key words:nanostructure; luminescence materials; nanocomposites; optical properties; rare earths;
【全文内容正在添加中】
