Silica induced oxygen vacancies in supported mixed-phase TiO2 for photocatalytic degradation of phenol under visible light irradiation

被引：18
|
作者：
Wang, Lan [1 ]
Wang, Xu [2 ]
Yin, Jiao [1 ]
Zhu, Yunqing [1 ]
Wang, Chuanyi [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
[2] Chinese Acad Sci, Lab Green Chem & Organ Synth, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2016年 / 87卷
基金：
对外科技合作项目（国际科技项目）;
关键词：
Silica nanosheets; Oxygen vacancies; Supported TiO2; Phenol degradation; Visible light; ANATASE TIO2; WATER; DISINFECTION; NANOCRYSTALS; COMPOSITES; LOCATION; DEFECTS; RUTILE; OXIDE;
D O I：
10.1016/j.catcom.2016.09.011
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：
Phenol degradation with TiO2 has attracted a great deal of interest in recent years. However, its low efficiency under solar radiation and difficulty of recovery limit the potential use. Here we report a novel "silica support inducing oxygen vacancies" strategy to prepare visible-light-active TiO2 with mixed-phase, which show excellent photocatalytic performance for phenol degradation under visible light. Hydroxyl and superoxide radicals were the main oxidative species responsible for the degradation of phenol. Our work demonstrates that coupling with oxygen vacancy creation and silica nanosheets (SNSs) immobilization for TiO2 is a new approach to obtained efficient visible-light photocatalysts for practical application. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：98 / 101
页数：4
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