Vacuum-activated Co2+ and Ti3+ co-modified TiO2 with stable and enhanced photocatalytic activity
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- 作者：Haibei Liu ; Bin Shen ; Mingyang Xing ; Jinlong Zhang…
- 关键词：Cobalt ; Co ; doped TiO2 ; Vacuum ; Ti3+ ; Visible light absorption ; Photo ; catalytic activity
- 刊名：Research on Chemical Intermediates
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：42
- 期：4
- 页码：3459-3471
- 全文大小：593 KB
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Bin Shen (1)
Mingyang Xing (1)
Jinlong Zhang (1)
Baozhu Tian (1)
1. Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, People’s Republic of China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Catalysis
Physical Chemistry
Inorganic Chemistry - 出版者：Springer Netherlands
- ISSN：1568-5675
文摘
Vacuum-activated method was used to prepare Co2+ and Ti3+ co-modified TiO2 with the intention of enhancing visible light photo-catalytic performance, by expanding the visible light absorption and improving the quantum efficiency of the photo-catalytic reaction. The prepared co-modified catalysts were characterized by XRD, UV-DRS, XPS, EPR, etc. The characterization results indicate that the catalysts have a typical anatase crystalline form, and that some Co2+ are incorporated on the surface of TiO2, leading to the formation of Ti3+ and oxygen vacancies. The impurity levels induced by Co2+ and Ti3+ doping are the reason for the enhanced visible light absorption, and the synergistic effect of cobalt, Ti3+ and oxygen vacancies is responsible for the improvement of photo-catalytic activity.