Green synthesis of TiO2 nanocrystals with improved photocatalytic activity by ionic-liquid assisted hydrothermal method

被引：27
作者：
Wang, Bin [1 ,2 ]
Guo, Lingju [1 ]
He, Meng [1 ]
He, Tao [1 ]
机构：
[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2013年 / 15卷 / 24期
关键词：
ANATASE TIO2; SURFACE FLUORINATION; MICROSPHERES; FACETS; NANOPARTICLES; DEGRADATION; PERCENTAGE; NANOSHEETS; TITANIA; RUTILE;
D O I：
10.1039/c3cp50862e
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：
Owing to potential industrial applications and fundamental significance, tailored synthesis of well-defined anatase TiO2 nanocrystals with exposed highly reactive {001} facets has stimulated great research interest. In this work, surface-fluorinated anatase TiO2 nanocrystals have been successfully prepared by using an ionic liquid (IL) assisted hydrothermal synthetic route. TiCl4 is used as precursor, and 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]+[ BF4](-)) as morphology-controlling agent. The anion of the IL plays a key role in controlling the crystallization process via a dissolution-recrystallization process. Compared with the benchmark material Degussa P25, the fluorinated anatase TiO2 nanocrystals exhibit superior photocatalytic activity.
引用
收藏
页码：9891 / 9898
页数：8
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