biostudies-literatureAn KFundamental Research Funds for the Central Universities29https://www.ebi.ac.uk/biostudies/studies/S-EPMC12845686biostudies-literatureUnknown14(1)This study explores the application of a cobalt-manganese oxide catalyst supported on coal gangue (CoMnOx@CG) for peroxymonosulfate (PMS) activation to degrade phenol in coal chemical wastewater (CCW). The synthesized CoMnOx@CG catalyst demonstrated remarkable catalytic activity, achieving above 90% phenol removal within 10 min at pH 9 and 11. More importantly, the catalyst exhibited excellent stability and reusability, maintaining over 85% phenol removal efficiency after four consecutive cycles and cobalt leaching below 100 μg/L. Quenching experiments and electron paramagnetic resonance (EPR) analyses revealed that singlet oxygen (¹O₂), sulfate radicals (SO₄·^-), and hydroxyl radicals (·OH) contributed to the degradation process. When treating acToxicsSynergistic Activation of Peroxymonosulfate by CoMnOx Supported on Coal Gangue for Alkaline Wastewater Treatment.PMC12845686No. BBJ2024052Yang WAn KZhang HfalseSynergistic Activation of Peroxymonosulfate by CoMnOx Supported on Coal Gangue for Alkaline Wastewater Treatment.This study explores the application of a cobalt-manganese oxide catalyst supported on coal gangue (CoMnOx@CG) for peroxymonosulfate (PMS) activation to degrade phenol in coal chemical wastewater (CCW). The synthesized CoMnOx@CG catalyst demonstrated remarkable catalytic activity, achieving above 90% phenol removal within 10 min at pH 9 and 11. More importantly, the catalyst exhibited excellent stability and reusability, maintaining over 85% phenol removal efficiency after four consecutive cycles and cobalt leaching below 100 μg/L. Quenching experiments and electron paramagnetic resonance (EPR) analyses revealed that singlet oxygen (¹O₂), sulfate radicals (SO₄·^-), and hydroxyl radicals (·OH) contributed to the degradation process. When treating ac2025-01-01T00:00:00Z2025 Dec2026-06-14T03:16:29.92Z2026-06-14T03:09:14.077ZS-EPMC128456864160057810.3390/toxics14010029