The g-C3N4 modified by AgBr and ZIF-8 adsorption-photocatalysis synergistic degradation of bisphenol A

In this work, a ternary complex (g-C3N4/ZIF-8/AgBr) was prepared by modifying the surface of the protonated graphitic carbon nitride (g-C3N4) with photosensitive AgBr and zeolitic imidazolate framework-8 (ZIF-8), and its physicochemical parameters, crystal morphology and electrochemical properties were characterized using a series of techniques. The modified g-C3N4 not only improves the ability to capture pollutants in water, but also efficiently catalyzes the degradation of bisphenol A (BPA) in water by rapidly producing superoxide radicals (·O2− ), cavitation (h+) and hydroxyl radicals (·OH) in visible light, with the removal efficiency reaching 80.4%. The activity of catalytic degradation of BPA from strong to weak is g-C3N4/ZIF-8/AgBr, g-C3N4/AgBr, g-C3N4/ZIF-8, AgBr, g-C3N4, ZIF-8. After four cycles of experiments, it was found that g-C3N4/ZIF-8/AgBr had still considerable degradation ability (70.2%) and stability.