关键词: Sn4+掺杂;铁酸铜;亚甲基蓝;过氧化氢

Abstract: Sn4+doped CuFe2O4samples were prepared by sol-gel method.The crystal structure and microstructure of the samples were characterized by X-ray diffraction(XRD)and scanning electron microscope(SEM).Catalytic performance of CuFe2O4samples doped different amounts of Sn4+was discussed using methylene blue(MB)as the degradation object.The experimental results show that when Sn4+doping amount is 5%,the prepared sample has a good crystallinity.85%decolorization rate of 50 mg/L methylene blue solution is achieved within 120 min under the conditions of 0.02 g 5%Sn4+doped CuFe2O4,0.02 mL H2O2and the temperature of 298 K.Kinetic studies indicate that the degradation process is coincidence to the first-order kinetic equation and the reaction rate constant is 0.0155 min-1.

Key words: Sn4+doped;CuFe2O4;methylene blue;H2O2