Facile sonochemical synthesis of CePO4 : Tb/LaPO4 core/shell nanorods with highly improved photoluminescent properties
Data(s) |
2006
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Resumo |
A simple, efficient and quick method has been established for the synthesis of CePO4:Tb nanorods and CePO4:Tb/LaPO4 core/shell nanorods via ultrasound irradiation of inorganic salt aqueous solution under ambient conditions for 2 h. The as-prepared products were characterized by means of powder x-ray diffraction (PXRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction ( SAED), x-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra and lifetimes. TEM micrographs show that all of the as-prepared cerium phosphate products have rod-like shape, and have a relatively high degree of crystallinity and uniformity. HRTEM micrographs and SAED results prove that these nanorods are single crystalline in nature. The emission intensity and lifetime of the CePO4:Tb/LaPO4 core/shell nanorods increased significantly with respect to those of CePO4: Tb core nanorods under the same conditions. A substantial reduction in reaction time as well as reaction temperature is observed compared with the hydrothermal process. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhu L;Liu XM;Liu XD;Li Q;Li JY;Zhang SY;Meng J;Cao XQ.Facile sonochemical synthesis of CePO4 : Tb/LaPO4 core/shell nanorods with highly improved photoluminescent properties,NANOTECHNOLOGY,2006,17(16):4217-4222 |
Palavras-Chave | #CERIUM PHOSPHATE #OPTICAL-PROPERTIES #TITANIUM-OXIDE #SULFIDE NANOPARTICLES #SELENIUM NANOWIRES #SURFACE SYNTHESIS #EPITAXIAL-GROWTH #THIN-FILMS #NANOCRYSTALS #NANOTUBES |
Tipo |
期刊论文 |