Affiliation:
1. Henan Institute of Engineering
Abstract
Most of photocatalytic reaction taken place in a slurry type reactor, which is of poor light utilization and difficulty to recycling of photocatalyst. To overcome these drawbacks, a floating photocatalyst (TiO2/EP) was prepred by hrothermal method, in which EP(Expanded Perlite) was used as an substrate. Photocatalysts activity was evaluated under UV light using Rhodamine B as the pollutant model. The effect of heating temperature, heating time and dosage of EP on activity of TiO2/EP were Discussed. The results showed 2h and 200°C were the optimal conditions and the dosage of EP has no significant effect on activity of TiO2/EP. The results of XRD and SEM showed TiO2 is anatase form, well crystallized and dispersed; its particle size is about 100~150nm. This floating photocatalyst can remove about 97.4% rhodamine B(10mg/L) during 90min under UV light. It has broad prospects for engineering applications.
Publisher
Trans Tech Publications, Ltd.
Reference16 articles.
1. Keller, V., P. Bernhardt and F. Garin, Photocatalytic oxidation of butyl acetate in vapor phase on TiO2, Pt/TiO2 and WO3/TiO2 catalysts. Journal of catalysis, 2003. 215(1): pp.129-138.
2. Nathaporn, A., V. Saravanamuthu and H.N. Huu, A continuous photocatalysis system in the degradation of herbicide. Korean Journal of Chemical Engineering, 2008. 25(4):P. 663-669.
3. Lee, J.H. and Kang. M, The preparation of TiO2 nanometer photocatalyst film by a hydrothermal method and its sterilization performance for Giardia lamblia. Water Research, 2004. 38(3): pp.713-719.
4. H., P. Shivaraju, Removal of Organic Pollutants in the Municipal Sewage Water by TiO2 based Heterogeneous Photocatalysis. International Journal of Environmental Sciences, 2011. 1(5): pp.911-923.
5. O Kte, A.N. and E. Say I Ns O Z, Characterization and photocatalytic activity of TiO2 supported sepiolite catalysts. Separation and Purification Technology, 2008. 62(3): pp.535-543.