应用化学2011，Vol.28Issue(8)：913-917,5.DOI:10.3724/SP.J.1095.2011.00586
Tb3+掺杂CePO4核壳微球的水热合成及其发光性能
Hydrothermal Synthesis and Luminescence Properties of CePO4 ∶Tb Core-shell Microspheres
摘要
Abstract
Tb3 + -doped CePO4 core-shell microspheres with diameter of 2 - 3 μm were hydrothermally synthesized at pH = 1.0 without using any template or surfactant. It was observed that the shells of these spheres were composed by nanorods with a diameter of about 20 ~ 30 nm and lengths up to 200 ~ 300 nm. The time-dependent experiments were also carried out to investigate their growing process. Initially, aggregated spherical products were formed. Then, some particles grew on its surface. As a result of Ostwald ripening, the size of the product increased. Finally, at the expense of the cores inside the spheres, the surface of the product experienced a change from nanoparticles to nanorods. The luminescent properties and luminescence decay lifetimes of CePO4: Tb core shell microspheres were performed, indicating that the strongest emission intensity was reached with 10% molar fraction of Tb3+ ions, which might be ascribed to the concentration quenching effect.关键词
CePO4∶Tb/核壳微球/水热合成/光致发光Key words
CePO4:Tb,core shell microspheres,hydrothermal synthesis,photoluminescence分类
化学化工引用本文复制引用
王鹏飞,张贤文,朱永春,钱逸泰..Tb3+掺杂CePO4核壳微球的水热合成及其发光性能[J].应用化学,2011,28(8):913-917,5.基金项目
国家重点基础研究发展计划(973)项目(2005CB623601) （973）
