To overcome the problem caused by the separation photocatalysts from system in the traditional photocatalytic technology

the photocatalytic membrane was prepared by filtrating suspended ZnIn2S4 on the surface of ultrafiltration membrane and was characterized by SEM

UV-Vis

XPS

XRD

and the ultrafiltration performance was also analyzed. The degradation rate of fluvastatin by photocatalytic membranes was investigated under a 500 W xenon lamp with intensity of 230 W/m2. With the increase of the photocatalyst loading

the absorbance of photocatalytic membrane in ultraviolet and visible light region increased

the characteristic peak response of Zn

In and S elements increased

the diffraction peak of ZnIn2S4 with hexagonal phase increased and the hydrophilicity increased

which indicated that formation of photocatalytic coating layer on the surface. The degradation rate of fluvastatin was also enhanced by formation of photocatalytic coating layer. However

agglomeration of excess ZnIn2S4 on the surface of the membrane leaded to reducing the utilization rate of the photocatalyst and affeced the photocatalytic efficiency. The photocatalytic coating layer of photocatalytic membrane with 0.2 g ZnIn2S4 could be effectively excited by xenon lamp and the degradation rate of fluvastatin was 94.75%.