Synthesis and characterizations of spherical Eu:La2O3 and related core/shell nanoparticles

被引：13

作者：

Gunawidjaja, Ray ^{[1
]}

Diez-y-Riega, Helena ^{[1
]}

Eilers, Hergen ^{[1
]}

机构：

[1] Washington State Univ, Inst Shock Phys, Appl Sci Lab, Spokane, WA 99210 USA

来源：

POWDER TECHNOLOGY | 2015年 / 271卷

关键词：

La2O3; Temperature sensors; Core/shell nanoparticles; Fluorescence spectroscopy; Rare-earth dopants; ELECTRONIC ENERGY LEVELS; LANTHANIDE AQUO IONS; LA2O3; FILMS; LUMINESCENCE; FABRICATION;

D O I：

10.1016/j.powtec.2014.11.021

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

By identifying a suitable concentration ratio of salt/citric-acid/urea, we demonstrate that homogeneous precipitation in the presence of a citric acid capping agent can be used to synthesize spherical Eu:La2O3 precursor (p-Eu: La2O3) nanoparticles with a (375 +/- 60) nm diameter. Subsequent calcination of the precursor yields crystalline Eu:La2O3. We use the same synthesis technique to prepare various core/shell nanostructures such as p-Eu:La2O3/p-Tb:Y2O3, SiO2/p-Eu:La2O3, and p-Tb:Y2CO3/p-Eu:La2O3. In the absence of citric acid, we obtain one-or two-dimensional nanostructures. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：255 / 261

页数：7

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