Preparation and Characterization of Magnetic Photocatalysts Tio_2 Loaded with Strontium Ferrite

The photocatalyst of TiO2 loaded with strontium ferrite were synthesized via sol-gel technol- ogy and characterized by X-ray powder diffraction (XRD),electron microscope (TEM),UV-Vis diffused reflectance spectroscope (DRS) and vibrating sample magnetometer(VSM).The photocatalytic activi- ties of the samples were evaluated by decolorization of methylene blue(MB) under UV irradiation.The results indicate that the TiO_2 loaded strontium ferrite photocatalyst is responsive to the visible light region according to DRS analysis.It is also found that the composite has good magnetic property. About 99.1% MB can be removed at the catalyst dosage of 1.5g/L under UV irradiation for 300 min, when the catalyst is loaded with 20% strontium ferrite.