Synthesis of LaPO4:Ce, Terbium by Co-Precipitation Method
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Zhu Zhaowu Cui Dali Li Minglai Ren Le Huang Xiaowei Zhao Na Long Zhiqi Cui Meisheng
Key words：LaPO4:Ce,Tb; precursor; green phosphors; co-precipitation method; rare earths;
Abstract: The synthesis of precursor of green phosphors, LaPO4:Ce, Tb, by means of co-precipitation with cocurrent flow feed was studied. The effects of the reaction temperature, the kind and concentration of the acid in the bottom water, and the charging rate on the physical properties, such as particle size, were investigated. It is found that the particle size of the powder is controllable by adjusting acidity in bottom water and charging rate. The powder with diameter size of 3 to 5 μm was obtained. Its XRD and SEM were analyzed. XRD patterns of the as-prepared green phosphor powders display the typical peaks of CePO4. SEM shows that the morphology of powders is ball-shaped.
Zhu Zhaowu1，Cui Dali1，Li Minglai1，Ren Le1，Huang Xiaowei1，Zhao Na1，Long Zhiqi1，Cui Meisheng1
(1.Grirem Advanced Materials Co. Ltd., General Research Institute for Non-Ferrous Metals, Beijing 100088, China)
Abstract:The synthesis of precursor of green phosphors, LaPO4:Ce, Tb, by means of co-precipitation with cocurrent flow feed was studied. The effects of the reaction temperature, the kind and concentration of the acid in the bottom water, and the charging rate on the physical properties, such as particle size, were investigated. It is found that the particle size of the powder is controllable by adjusting acidity in bottom water and charging rate. The powder with diameter size of 3 to 5 μm was obtained. Its XRD and SEM were analyzed. XRD patterns of the as-prepared green phosphor powders display the typical peaks of CePO4. SEM shows that the morphology of powders is ball-shaped.
Key words:LaPO4:Ce,Tb; precursor; green phosphors; co-precipitation method; rare earths;
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