The structure and photoluminescence of Bi4Ti3O12 nanoplates synthesized by hydrothermal method

被引：33

作者：

Gu, Haoshuang ^{[1
]}

Hu, Zhenglong ^{[1
,2
]}

Hu, Yongming ^{[1
]}

Yuan, Ying ^{[1
]}

You, Jin ^{[1
]}

Zou, Weidong ^{[2
]}

机构：

[1] Hubei Univ, Fac Phys & Elect Technol, State Key Lab Ferro & Piezoelect Mat & Devices Hu, Wuhan 430062, Peoples R China

[2] Xianning Coll, Dept Informat Engn, Xianning 437005, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2008年 / 315卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Bi4Ti3O12; nanoplates; photoluminescence;

D O I：

10.1016/j.colsurfa.2007.08.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bismuth titanate (Bi4Ti3O12) nanoplates were synthesized by polyethylene glycol-assisted hydrothermal method at 200 degrees C. The as-prepared samples were investigated by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy and the room-temperature photolummescence. The Bi4Ti3O12 nanoplates are single crystalline and orthorhombic perovskite structure with the average rim sizes of about 200 nm and thickness of 10-20 nm. One blue-green photoluminescence band centered at around 470.4 nm was observed at room temperature. The investigation of the effects of the annealing temperatures on room-temperature visible emission showed that the annealing temperatures or grain size play important roles for the intensities of blue-green light emission, and the oxygen vacancies should be responsible for this emission. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：294 / 298

页数：5

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