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采用水热法制备Bi2WO6-NiFe2O4磁性可见光催化剂。利用X射线衍射(XRD)、紫外-可见漫反射光谱(DRS)、扫描电子显微镜(SEM)和磁学性质测量系统(MPMS)对所合成材料进行分析和表征。最后以罗丹明B(RhB)为目标污染物,考察不同pH值条件下,Bi2WO6-NiFe2O4复合可见光催化剂对污染物的降解效率。结果表明,罗丹明B溶液pH值为5时,Bi2WO6-NiFe2O4具有最大降解效率2 h达98%。Bi2WO6-NiFe2O4在外加磁场下能快速的从溶液中分离。
Preparation of Bi2WO6-NiFe2O4 magnetic visible light catalyst by hydrothermal method. The synthesized materials were analyzed and characterized by X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) and magnetic properties measurement system (MPMS) Finally, rhodamine B (RhB) was selected as the target pollutant to investigate the degradation efficiency of Bi2WO6-NiFe2O4 composite visible light photocatalyst under different pH conditions. The results showed that the maximum degradation efficiency of Bi2WO6-NiFe2O4 was 98% after 2 h of Rhodamine B solution at pH 5. Bi2WO6-NiFe2O4 can quickly separate from solution under the applied magnetic field.