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The Microwave-assisted Photocatalytic Degradation of Methylene Blue Solution Using TiO2 Balls Prepared by Chemical Vapor Deposition  

Park, Sang-Sook (Department of Environmental Engineering, Sunchon National University)
Park, Jae-Hyeon (Clean Energy System Research Center, Korea Institute of Energy Research)
Kim, Sun-Jae (Department of Nano Science and Technology, Sejong University)
Jung, Sang-Chul (Department of Environmental Engineering, Sunchon National University)
Publication Information
Korean Chemical Engineering Research / v.46, no.6, 2008 , pp. 1063-1068 More about this Journal
Abstract
The photocatalytic degradation of methylene blue water solution was carried out by irradiating microwave and UV light simultaneously using $TiO_2$ photocatalyst balls prepared by Chemical Vapor Deposition method. A microwave-discharged electrodeless UV lamp was developed to use microwave and UV simultaneously for photocatalytic reactions. The results of photocatalytic degradation of methylene blue showed that the decomposition rate increased with the microwave intensity, the circulating fluid velocity and auxiliary oxidizing agents added. Especially, the rate constant of $H_2O_2$-added photocatalytic reaction increased about three times from $0.0061min^{-1}$ to $0.0197min^{-1}$ when microwave was additionally irradiated. This study demonstrates that the microwave irradiation can play a very important role in photocatalytic degradation using peroxides although it is not easy to quantitatively assess the effect of microwave on photocatalytic reactions from the experimental data of this study.
Keywords
Photocatalyst; Microwave; UV; Methylene Blue; Chemical Vapor Deposition;
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Times Cited By KSCI : 1  (Citation Analysis)
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