Enhanced Degradation of Rhodamine B through Peroxymonosulfate Activated by a Metal Oxide/Carbon Nitride Composite

The development of high catalytic performance heterogeneous catalysts such as peroxymonosulfate (PMS) activators is important for the practical remediation organic pollution caused by Rhodamine B (RhB). An economical and facile synthesized composite copper–magnesium oxide carbon nitride (CM/g-C3N4) was prepared sol-gel/high-temperature pyrolysis method to activate PMS RhB degradation. CM/g-C3N4 exhibited a splendid structure activation, aggregation decreased when it combined with nitride. introduction magnesium increased specific surface area pore volume CM/g-C3N4, providing more reaction sites. low usage (0.3 g/L) (1.0 mM) could rapidly degrade 99.88% 10 mg/L RhB, removal efficiency maintained 99.30% after five cycles, showing superior reusability CM/g-C3N4. synergistic effect copper g-C3N4 improved activation. According analyses EPR quenching experiments, SO4•?, •OH O2•? radicals 1O2 were generated in activation PMS, which SO4•? removal. toxicity alleviated being degraded CM/g-C3N4/PMS system. This study provides an efficient promising strategy removing dyes water due hybrid pathways