Preparation and Photocatalytic Activity of Fe-Ce-N Tri-Doped TiO₂ Catalysts

Abstract:

Fe-Ce-N tri-doped TiO₂ photocatalyst was prepared by sol-gel method using tetrabutyl titanate as precursor. The optimal doping amount and calcinations temperature were determined. The prepared catalyst was characterized by X-ray diffraction (XRD) and UV-Vis diffuse reflectance spectroscopy, and the photocatalytic activity was evaluated by means of the degradation for methyl orange (MO) under UV light and daylight irradiation. The results indicated that the optimal doping amount was 1.0% N, 0.25% Fe and 0.05% Ce, and the appropriate calcination temperature was 400°C. XRD analysis showed that TiO₂ existed in anatase phase completely. UV-Vis adsorption spectrum showed that Fe-Ce-N tri-doping resulted in a intense adsorption in the near UV and visible-light region and a red shift in the adsorption edge from UV range to visible range of 400-500nm. The photocatalytic activity of Fe-Ce-N tri-doped TiO₂ under UV and daylight irradiation was very higher than that of bi-doped Fe-Ce-TiO₂, Fe-N-TiO₂, Ce-N-TiO₂ and undoped TiO₂. The significantly higher activity of Fe-Ce-N tri-doped TiO₂ may be due to the synergetic effect of Fe, Ce and N in the tri-coped TiO₂.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 1276-1282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.1276
• Online since: August 2013
• Authors: Yao Yao Wang*, Hong Xie, Wei Zhang, Yu Bin Tang, Fang Yan Chen
• Keywords: Daylight, Fe-Ce-N Co-Doped, Photocatalyst, Sol-Gel Method, Titania, UV Light

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