Controllable Synthesis and Photoluminescence of Single-Crystalline BaHfO3 Hollow Micro- and Nanospheres

被引：23

作者：

Ye, Tiannan ^{[1
,2
]}

Dong, Zhenghong ^{[1
,2
]}

Zhao, Yongnan ^{[1
,2
]}

Yu, Jianguo ^{[3
]}

Wang, Fengqin ^{[3
]}

Guo, Shukun ^{[3
]}

Zou, Yongcun ^{[4
]}

机构：

[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, Inst Nanostruct Mat, Tianjin 300160, Peoples R China

[2] Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin Key Lab Fiber Modificat & Funct Fiber, Tianjin 300160, Peoples R China

[3] Tianjin Polytech Univ, Sch Chem & Environm Engn, Tianjin 300160, Peoples R China

[4] Jilin Univ, State Key Lab Inorgan Synth & Preparat Chem, Coll Chem, Changchun 130023, Peoples R China

来源：

LANGMUIR | 2011年 / 27卷 / 14期

关键词：

ROOM-TEMPERATURE; BARIUM-TITANATE; FABRICATION; OXIDE; MICROSPHERES; TEMPLATES; PARTICLES; NANOTUBES; EMISSION; SPHERES;

D O I：

10.1021/la201749z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper presents a facile hydrothermal route to synthesize monodispersive and single-crystalline BaHfO3 hollow micro- and nanospheres in a concentrated basic environment. The hollow spheres were size tunable from submicrometer to nanoscale by simply adjusting the base concentration at a suitable temperature. The base concentration played the key role on forming BaHfO3 hollow spheres. Detailed investigations on base concentration, reaction temperature, and duration indicated that the formation of BaHfO3 hollow spheres was driven by Ostwald ripening process. Because of the abundance of defects, the as-prepared BaHfO3 hollow nanospheres exhibited a blue light emission under UV-light excitation at room temperature. Calcination led to the photoluminescence declination due to the decrease of defects.

引用

页码：8878 / 8884

页数：7

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