Degradation of Microcystin-LR in water: Hydrolysis of peptide bonds catalyzed by maghemite under visible light

- Catalytic hydrolysis on the surface of maghemite significantly improves degradation of MC-LR in water by using H2O2.
- Visible light plays a crucial role in the formation of Brønsted base sites and regeneration of active ferric sites.
- The maghemite system displays high selectivity and efficiency toward degradation of MCs in actual water treatment process.