期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 219, 期 -, 页码 412-424出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2017.07.078
关键词
CO2 photocatalytic reduction; Codoping; TiO2; Photoreactor; Simulated sunlight
资金
- National Natural Science Foundation of China [U1610110]
- Foreign Science and Technology Cooperation of Hubei Province [2016AHB021]
- Foundation of State Key Laboratory of Coal Combustion [FSKL-CCB1402]
In this paper, V and W codoped TiO2 catalysts were prepared and coated on the surface of honeycomb support. The V4+ doped in TiO2 lattice enhanced the visible light absorption of TiO2 while the V2O5 on the surface of TiO2 and W6+ in TiO2 lattice could trap photogenerated electrons and transfer them to CO2 and water adsorbed on the surface of catalyst, resulting in effective separation of photogenerated charges. CO2 photocatalytic reduction over V and W codoped TiO2 catalyst was conducted in an internal-illuminated honeycomb photoreactor under simulated sunlight irradiation. Due to the strong visible light absorption and effective separation of photogenerated charges caused by V and W codoping and stable chemical states of V and W during photocatalytic reaction, the V and W codoped TiO2 catalysts exhibited stable and enhanced photocatalytic activity comparing with pristine TiO2 and single metal doped TiO2. (C) 2017 Elsevier B.V. All rights reserved.
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