Synthesis and Research on Photocatalytic Activity of Ag3PO4/Ag/ZIF-8 Composites Photocatalyst
A series of Ag3PO4/Ag/ZIF-8 composite photocatalysts were successfully synthesized with ZIF-8,NaH2PO4and AgNO3as raw materials at room temperature.Products were characterized by X-ray diffraction,X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectra and scanning electron microscopy.The photocatalytic activity of the samples were evaluated by degradation of rhodamine B under simulated sunlight irradiation.The experiments show that Ag 3PO4/Ag/15%ZIF-8 composite has the best activity and the degradation of RhB rate still reached 87%after four recycle experiments,which are attributed to the synergistic effect of Ag 3PO4and ZIF-8 heterostructure and the electron transfer effect of the elementary substance Ag.