Oxygen vacancy modulation of {010}-dominated TiO2 for enhanced photodegradation of Sulfamethoxazole

被引：15
|
作者：
Qi, Weixiao [1 ]
Zhang, Fan [2 ]
An, Xiaoqian [1 ]
Liu, Huijuan [1 ]
Qu, Jiuhui [1 ]
机构：
[1] Tsinghua Univ, Sch Environm, Ctr Water & Ecol, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2019年 / 118卷
基金：
中国国家自然科学基金;
关键词：
Oxygen vacancy; Photocatalytic degradation; TiO2; Facet; Sulfamethoxazole; ANATASE; SURFACE; EVOLUTION;
D O I：
10.1016/j.catcom.2018.09.014
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：
Oxygen vacancy modulation of metal oxide photocatalysts has triggered an explosion of interest for the unprecedented and superior photoactivities. Herein, the influence of oxygen vacancies on the activity of {010}-faceted TiO2 for photodegradating SMX was evaluated. Experimental studies indicated that the formation of oxygen vacancies was highly dependent with the thermal treatment atmosphere. Vacuum treatment was favorable for the generation of surface hydroxyl groups, which contributed to the interfacial extraction of holes. In contrast, air calcinations benefited the formation of surface defects. The enhanced charge separation resulted in the remarkably improved photoactivity for SMX degradation.
引用
收藏
页码：35 / 38
页数：4
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