A self-templated approach to TiO2 microcapsules

被引：135
|
作者：
Hu, Yongxing
Ge, Jianping
Sun, Yugang
Zhang, Tierui
Yin, Yadong [1 ]
机构：
[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
[2] Ctr Nanoscale Mat, Argonne Natl Lab, Argonne, IL 60439 USA
来源：
NANO LETTERS | 2007年 / 7卷 / 06期
关键词：
D O I：
10.1021/nl0708157
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A self-templated approach has been developed for the synthesis of TiO2 microcapsules with tunable size and wall thickness by heating sol-gel derived TiO2 microspheres with poly(acrylic acid) (PAA) in a diethylene glycol (DEG) solution. PAA plays a crucial role in the formation of microcapsules by crosslinking the surface TiO2 nanoparticles and preventing them from dissolution by DEG. Hollow microcapsules form when DEG molecules penetrate the outer layer and remove the core materials by forming soluble titanium glycolate.
引用
收藏
页码：1832 / 1836
页数：5
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