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Citation: WANG Shu-qin, WU Jin-jin, DU Zhi-hui. Influence of Co-Ce co-doping on photocatalytic DeNOx of TiO2 catalyst at room temperature[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(3): 361-369. shu

Influence of Co-Ce co-doping on photocatalytic DeNOx of TiO2 catalyst at room temperature

  • Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China

  • Corresponding author: WANG Shu-qin, wsqhg@163.com
  • Received Date: 8 October 2018
    Revised Date: 8 January 2019

    Fund Project: The project was supported by the National Basic Research Program of China 2018YFB060420103National Natural Science Foundation of HeBei Province E2014502111The project was supported by the National Basic Research Program of China(2018YFB060420103) and National Natural Science Foundation of HeBei Province (E2014502111)

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  • Ce-TiO2 and Ce-Co-TiO2 powders were prepared by the sol-gel hydrothermal method with butyl titanate as the source of Ti, cerium nitrate as the source of Ce, cobalt nitrate for Co source. The modified TiO2 catalysts were characterized with BET, XRD, SEM, UV-vis, XPS and NH3-TPD. The NO reduction efficiency by visible light over the modified TiO2 catalysts was carried out. The experimental results show that the catalyst Ce (1% molar)-Co (5% molar)-TiO2 prepared under the conditions of 24 h hydrothermal synthesis at 160 and 200 ℃of calcination showed the best performance. At room temperature, the visible light catalytic efficiency of the catalyst reached 92.69% when the NO initial concentration was 762 μg/m3. When the NO initial concentration was 1148 μg/m3, the visible light catalytic efficiency could still reach 85.94%, which was improved by nearly 50% compared with pure TiO2. Moreover, it was found that in the resistance of SO2 and continuous usage, the efficiency of the Ce (1%)-Co (5%)-TiO2 catalyst was better than the commercial catalysts (TiO2 with V2O5 doping).
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