Preparation and Photodegradation of Photocatalytic Functional Fe₂O₃/TiO₂ Ceramics

Using iron nitrate nonahydrate （Fe（NO₃）₃·9H₂O） and titanium sulfate （Ti（SO₄）₂） as raw materials,Fe₂O₃/ TiO₂ mixed powders were synthesized by co-precipitation method. The green cylinders were formed under axial-pressure and sintered at high temperature to obtain the Fe₂O₃/TiO₂ ceramics.Phase and microstructure of Fe₂O₃/ TiO₂ porous ceramics were analyzed by XRD and SEM. The photocatalytic and recyclable performances of the ceramics material in the degradation of methyl blue （MB: 25 mg/L） were studied. The results indicate that after the first time of catalysis about 80% and 94% of MB is degraded with Fe₂O₃/ TiO₂ ceramics respectively under the ultraviolet and visible （UV/vis） light,after three times of recycles the maximum degradation rate of MB by Fe₂O₃/ TiO₂ ceramics only reduces by 16% and 17% under the ultraviolet and UV/Vis light,respectively. The Fe₂O₃/ TiO₂ porous ceramics shows a good photocatalytic and recyclable performance,which is suggested to be a promising new photocatalysts widely used in the pollutant water treatment.