Laser-Induced Nitrogen-Doped Graphene Composite Iron–Cobalt Hydroxide for Methylene Blue Degradation via Electrocatalytic Activation of Peroxymonosulfate

With the acceleration of industrialization, removal refractory organic dyes from water and how to promote its practical application remains a challenge. Herein, we synthesized an FeCo-LDH/LI-NDG composite electrode material by simple laser-induced technique on polyimide films, which could electrocatalytically activate peroxymonosulfate (PMS) completely degrade MB in about 6 min. The reaction rate constant (kobs) was 0.461 min−1. It faster than most currently reported electrocatalysts. system demonstrated good interference resistance catalytic effectiveness pH range 3 9. According chemical quenching electron paramagnetic resonance (EPR) experiments, non-radical pathway 1O2 radical pathways SO4·−, ·OH O2·− were involved synergistically, with playing dominant role. produced through dual PMS loss at anode intermediate transformation cathode. two activation methods electro-activation had synergistic effects achieve high efficiency whole process production, recovery, providing new ideas advance applications.