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微乳液法合成的Eu3+掺杂La2(MoO4)3材料及其发光性能
Preparation of La2(MoO4)3 by A Simple Microemulsion Method and Its Photoluminescence Properties
- 发光学报 2015年36卷第7期 页码：775-781
- 作者机构：
1. 安徽建筑大学 材料与化学工程学院,安徽 合肥,230601
2. 安徽建筑大学 功能分子设计与界面过程重点实验室,安徽 合肥,230601
- 作者简介：
- 基金信息：国家自然科学基金(21201004)资助项目()
DOI：10.3788/fgxb20153607.0775
中图分类号： TB34;O482.31纸质出版日期：2015-7-3，
收稿日期：2015-4-17，
修回日期：2015-5-5，
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丁益, 方辉, 张峰君等. 微乳液法合成的Eu<sup>3+</sup>掺杂La<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>材料及其发光性能[J]. 发光学报, 2015,36(7): 775-781
DING Yi, FANG Hui, ZHANG Feng-jun etc. Preparation of La<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> by A Simple Microemulsion Method and Its Photoluminescence Properties[J]. Chinese Journal of Luminescence, 2015,36(7): 775-781
丁益, 方辉, 张峰君等. 微乳液法合成的Eu<sup>3+</sup>掺杂La<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>材料及其发光性能[J]. 发光学报, 2015,36(7): 775-781 DOI： 10.3788/fgxb20153607.0775.
DING Yi, FANG Hui, ZHANG Feng-jun etc. Preparation of La<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> by A Simple Microemulsion Method and Its Photoluminescence Properties[J]. Chinese Journal of Luminescence, 2015,36(7): 775-781 DOI： 10.3788/fgxb20153607.0775.
摘要
在微乳体系(十六烷基三甲基溴化氨/水/戊烷/戊醇)协助下
采用钼酸钠和硝酸镧通过微乳反应制备了具有不同微结构的La
2
(MoO
4
)
3
。在表面活性剂CTAB浓度由0.2 mol/L增加到0.4 mol/L的过程中
La
2
-(MoO
4
)
3
的结构由蚕蛹状逐渐转变成近球形。经800 ℃煅烧处理4 h后的La
2
(MoO
4
)
3
:Eu
3+
材料通过396 nm紫外光激发
发射出由
5
D
0
7
F
2
的受迫电偶极跃迁产生的波长为617 nm红光
且当Eu
3+
掺杂摩尔分数达到20%时
发光强度达到最大。
Abstract
La
2
(MoO
4
)
3
micro-materials with different morphologies were prepared by microemulsion reaction of sodium molybdate (Na
2
MoO
4
2H
2
O) and lanthanum nitrate(La(NO
3
)
3
6H
2
O) under the help of micro emulsion system. The morphology of La
2
(MoO
4
)
3
samples gradually transform from oval shape to close spherical shape with the concentration of the surfactant of CTAB increasing from 0.2 mol/L to 0.4 mol/L. Under 396 nm excitation
La
2
(MoO
4
)
3
:Eu
3+
samples calcined at 800 ℃ for 4 h emit 617 nm red light due to the forced electric dipole transition of
5
D
0
7
F
2
. The emission is strongest when the mole fraction of Eu
3+
is up to 20%.
关键词
微乳液La2(MoO4)3:Eu3+发光性能
Keywords
microemulsionLa2(MoO4)3:Eu3+photoluminescence properties
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