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  • 宋学志 ( 副教授 ) 206

    的个人主页 http://faculty.dlut.edu.cn/2015011032/zh_CN/index.htm

  •   副教授   博士生导师   硕士生导师
论文成果 当前位置: 中文主页 >> 科学研究 >> 论文成果
A facile photoassisted route to synthesis N, F-codoped oxygen-deficient TiO2 with enhanced photocatalytic performance under visible light irradiation

点击次数: 98
论文类型:期刊论文
发表时间:2018-03-15
发表刊物:APPLIED SURFACE SCIENCE
收录刊物:SCIE、EI
卷号:434
页面范围:725-734
ISSN号:0169-4332
关键字:Photocatalysis; Oxygen vacancies; N, F-Codoping; Surface heterojunctions; NH4TiOF3; Visible light utilization
摘要:Herein, we report a facile and economical photoassisted strategy for synthesizing the highly active N, Fcodoped oxygen-deficient TiO2 with coexposed {001} and {101} facets. NH4TiOF3 mesocrystals were used to act as the resource of dopants and the intermediate to fabricate TiO2 with highly active {001} facets. Comprehensive analysis based on X-ray photoelectron spectroscopy, transmission electron microscopy and electron spin resonances manifested that F, N and oxygen vacancies were simultaneously introduced to TiO2 through the photoassisted process. The test of phenol and Rhodamine B (RhB) degradation under visible light demonstrates that the as-prepared N, F codoped oxygen-deficient TiO2 exhibits higher photocatalytic activity than its references. The increased photocatalytic performances results from the synergetic effect of the induced Vo's and N, F codoping in TiO2 with co-exposed {001} and {101} facets, favoring the visible light utilization as well as the separation of photogenerated carriers. This strategy is expected to provide a new insight into the design of high performance photocatalysts. (C) 2017 Elsevier B.V. All rights reserved.

 

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