Tripolyphosphate as precursor for REPO4:: Eu3+ (RE = Y, La, Gd) by a polymeric method

被引：32
作者：
de Sousa Filho, Paulo C. [1 ]
Serra, Osvaldo A. [1 ]
机构：
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Pret, Dept Quim, Lab Terras Raras, BR-14040901 Ribeirao Preto, Brazil
来源：
JOURNAL OF FLUORESCENCE | 2008年 / 18卷 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
luminescence; rare earth; phosphates; europium; Pechini;
D O I：
10.1007/s10895-007-0272-3
中图分类号：
Q5 [生物化学];
学科分类号：
071010 ; 081704 ;
摘要：
A modification of the Pechini method was applied to obtain luminescent rare earth orthophosphates. The developed synthetic route is based on the ability of the tripolyphosphate anion (P3O105-) to act both as a complexing agent and as an orthophosphate precursor. Heating of aqueous solutions containing RE3+, Eu3+, P3O105-, citric acid, and ethylene glycol led to polymeric resins. The ignition of these resins at different temperatures yielded luminescent orthophosphates. The produced nanosized phosphors (YPO4:Eu3+, (Y,Gd)PO4:Eu3+, and LaPO4:Eu3+) were analyzed by infrared and luminescence spectroscopies, X-ray diffractometry, and scanning electron microscopy.
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收藏
页码：329 / 337
页数：9
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