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Fluorescence and phase transitions of Mg-Al-Eu ternary layered double hydroxides – dependence on annealing

Published online by Cambridge University Press:  09 July 2018

Yufeng Chen ,
Songhua Zhou ,
Fei Li ,
Junchao Wei ,
Yanfeng Dai  and
Yiwang Chen
Yufeng Chen*
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
Songhua Zhou
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
Fei Li
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
Junchao Wei
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
Yanfeng Dai
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
Yiwang Chen
Affiliation:
Department of Chemistry, Nanchang University, Nanchang 330031, China
*
*E-mail:yfchen@ncu.edu.cn
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Abstract

Fluorescence and phase transitions of a new Mg-Al-Eu ternary layered double hydroxide (LDH) and their dependence on thermal treatment were studied for the first time. Phase transitions occurred as the temperature increased from 400 to 1100°C. The process of phase transition is discussed in detail. The emissions of Eu3+ ions described by the 5D0–7FJ transition (J = 1,2,3,4), and especially for the 5D0–7FJ transition (J = 1,2) varied markedly with phase transformations from LDH, MgO, to mixtures of MgO and MgAl2O4. Moreover,strong emissions of Eu3+ ions are present in these new host materials. These results indicate that Mg-Al-Eu ternary LDH may be a potential candidate for materials applied in fluorescent devices.

Keywords

Mg-Al-Eu LDHEu3+ ionslayered double hydroxidefluorescencephase transition
Type
Research Article
Information
Clay Minerals , Volume 46 , Issue 3 , September 2011 , pp. 487 - 493
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2011

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