中文摘要：

本文利用超声分散和溶液沸腾法制备TiO2,CeO2/TiO2和Fe2O3/TiO2复合物,在可见光的照射下,考察了苋菜红降解的效果,并利用X-射线衍射（XRD）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对合成的光催化剂进行了表征.另外,研究了TiO2,CeO2/TiO2和Fe2O3/TiO2复合物的用量、可见光照射时间、处理温度和处理时间等因素对苋菜红降解率的影响.结果表明,CeO2/TiO2复合物对降解染料表现出了更好的光催化活性.

英文摘要：

In this work, TiO2, CeO2/TiO2 and Fe2O3/TiO2 composite oxides, as the novel photocatalysts, were synthesized by ultrasonic dispersion and liquid boiling method, and characterized by X-ray diffraction （XRD） and scanning electron microscope （SEM） and transmission electron microscope （TEM）. In addition, the photodegradation performance of the prepared samples were carried out under visible light irradiation, such as the dosage of TiO2, CeO2/TiO2 and Fe2Oa/TiO2 composite oxides, the visible light irradiation time, heat-treated temperature and heat-treated time. Results revealed that the CeO2/TiO2 composite oxide exhibits better photocatalytic activity for the degradation of dye.