Visible-Light-Driven g-C3N4/MoS2 Heterojunction Membranes for Synergistic Photocatalysis and Antifouling Dye Separation

In this study, a g-C 3 N 4 /MoS 2 composite membrane was successfully fabricated via electrostatic interactions and vacuum-assisted self-assembly. The established heterojunction markedly enhanced charge separation, yielding superior visible-light photocatalytic activity with 95.5% methylene blue degradation in 150   min. The membrane also demonstrated efficient dye separation (70.8% rejection for carmine red; 66.7% for malachite green) and notable antifouling properties, achieving a 74.9% flux recovery after visible-light cleaning. This work presents a synergistic strategy for simultaneous photocatalytic degradation and membrane separation in advanced water treatment.