Journal of Fluorescence

, Volume 18, Issue 2, pp 329–337 | Cite as

Tripolyphosphate as Precursor for REPO4:Eu3+ (RE = Y, La, Gd) by a Polymeric Method

Original Paper

Abstract

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 (\({\text{P}}_3 {\text{O}}_{10}^{5 - } \)) to act both as a complexing agent and as an orthophosphate precursor. Heating of aqueous solutions containing RE3+, Eu3+, \({\text{P}}_3 {\text{O}}_{10}^{5 - } \), 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.

Keywords

Luminescence Rare earth Phosphates Europium Pechini 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Laboratório de Terras Raras, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão PretoUniversidade de São PauloRibeirão PretoBrazil

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