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Citation: WANG Pengfei, ZHANG Xianwen, ZHU Yongchun, QIAN Yitai. Hydrothermal Synthesis and Luminescence Properties of CePO₄:Tb Core-shell Microspheres[J]. Chinese Journal of Applied Chemistry, ;2011, 28(8): 913-917. doi: 10.3724/SP.J.1095.2011.00586 shu

Hydrothermal Synthesis and Luminescence Properties of CePO₄:Tb Core-shell Microspheres

1.
School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026

Corresponding author: QIAN Yitai,
Received Date: 6 October 2010
Available Online: 10 December 2010
Fund Project: 国家重点基础研究发展计划(973)项目(2005CB623601) (973)项目(2005CB623601)

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.
- CePO₄:Tb,
- core shell microspheres,
- hydrothermal synthesis,
- photoluminescence
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Hydrothermal Synthesis and Luminescence Properties of CePO4:Tb Core-shell Microspheres

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通讯作者: 陈斌, bchen63@163.com

Hydrothermal Synthesis and Luminescence Properties of CePO₄:Tb Core-shell Microspheres