Zhang Gui-qin 1,2, BI Xian-jun1,*
(1. Institute of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming Yunnan 650092, P. R . China; 2. Department of Husbandry and Veterinary, Yunnan agriculture vocational and technical college, Kunming Yunnan 650031, P. R . China)
Abstract: Fe-doped nano-TiO2 photo-catalysts were obtained by microwave drying in ionic liquids. With Methyl Orange as degradation agent and ultraviolet lamp as light source, the influence of the volume of the ionic liquid, Fe/Ti mole ratio, microwave drying power and time, calcined temperature and time on the photo-catalytic activities of Fe-doped nano-TiO2 were investigated. The results indicated that the Fe-doped nano-TiO2 catalysts showed higher photo-catalytic activity than that of pure while the Fe/Ti mole ratio was 0.005% and the Fe-doped nano-TiO2 was dried in microwave with the power of 210 W for 17.5 min and calcined at 540 ℃ for 1.5 h.The methyl orange had almost been entirely degraded by UV light lighting 90 min or by sun light lighting 3h when the TiO2-Fe was used as photo-catalysts.
Key words: Ionic liquid; Microwave; Fe -doping; Titanium dioxide; Photo-catalyticdegradation
E-mail: bixj159@yahoo.com.cn
Journal of Molecular Catalysis, Vol. 24, Issue 6, 2010, 542~548
