Li Xue, Zhang Yan, Zhang Ying, Jin Ze, Liu Yunyi. Kinetics of Photo-catalytic Degradation of Methyl Orange by W,N-TiO2/SiO2/Fe3O4 Magnetic Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(3): 21-25. doi: 10.7513/j.issn.1004-7638.2015.03.005
Citation:
Li Xue, Zhang Yan, Zhang Ying, Jin Ze, Liu Yunyi. Kinetics of Photo-catalytic Degradation of Methyl Orange by W,N-TiO2/SiO2/Fe3O4 Magnetic Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(3): 21-25. doi: 10.7513/j.issn.1004-7638.2015.03.005
Li Xue, Zhang Yan, Zhang Ying, Jin Ze, Liu Yunyi. Kinetics of Photo-catalytic Degradation of Methyl Orange by W,N-TiO2/SiO2/Fe3O4 Magnetic Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(3): 21-25. doi: 10.7513/j.issn.1004-7638.2015.03.005
Citation:
Li Xue, Zhang Yan, Zhang Ying, Jin Ze, Liu Yunyi. Kinetics of Photo-catalytic Degradation of Methyl Orange by W,N-TiO2/SiO2/Fe3O4 Magnetic Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(3): 21-25. doi: 10.7513/j.issn.1004-7638.2015.03.005
School of Chemical Engineering, Liaoning Key Laboratory of Applied Chemical Engineering and Technology, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
W,N-TiO2/ SiO2/ Fe3O4 magnetic photocatalyst was prepared by low temperature sol-gel method,and its adsorption and catalytic degradation of methyl orange in organic wastewater respectively during the dark reaction and photoreaction was studied. Through degradation of methyl orange with different concentrations by the W,N-TiO2/ SiO2/ Fe3O4 magnetic photocatalyst,the degradation was confirmed to be a first-order reaction meeting the Langmiur-Hinshelwood (L-H) kinetics model with reaction rate constant k= 2.18 mg/(L·min) and apparent adsorption equilibrium constant K = 0.075 (L/mg). The half-life of reaction was found to lengthen with the increase in the initial concentration of methyl orange.
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