From amorphous phase separations to nanostructured materials in sol-gel derived ZrO2:Eu3+/SiO2 and ZnO/SiO2 composites

被引：28

作者：

Gaudon, A. ^{[1
]}

Lallet, F. ^{[1
]}

Boulle, A. ^{[1
]}

Leconite, A. ^{[1
]}

Soulestin, B. ^{[1
]}

Guinebretière, R. ^{[1
]}

Dauger, A. ^{[1
]}

机构：

[1] ENSCI, UMR CNRS 6638, Sci Procedes Ceram & Traitment Surface, F-87065 Limoges, France

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 21-22期

关键词：

nanocrystals; X-ray diffraction; nanocomposites; silica; silicates; sol-gels (xerogels);

D O I：

10.1016/j.jnoncrysol.2006.02.054

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZrO2Eu3+-SiO2 and ZnO-SiO2 composites have been synthesized by a sol-gel method by using a specific gelation and drying procedure. In the two cases we were able to produce large and transparent monolithic samples. Microstructural properties of these materials were investigated by thermo-differential and thermo-gravimetric analysis, X-ray diffraction, transmission electron microscopy and small angle X-ray scattering. The existence of a miscibility gap in both systems results in the formation of nanocomposites where crystallized zirconia or amorphous zinc oxide nanoparticles are dispersed in a silica glass matrix. These two kinds of nanocomposites are potential high efficiency luminescent materials because the nanoparticles size is easily controlled by the annealing conditions. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：2152 / 2158

页数：7

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