Electronic Synergy Modulation of Fe-Based Bimetallic Oxides Catalysts for Enhanced Ozonation in Industrial Wastewater Treatment

• • FeCo-O/O3 system achieved 2–3 times higher degradation efficiency of organic pollutants compared to conventional O3 oxidation, demonstrating significant performance enhancement for industrial wastewater treatment. • • FeCo-O catalyst possesses a single spinel structure with abundant metal valence states and synergistic Fe-Co interactions, which are critical for promoting electron transfer and O3 activation. • • The FeCo-O/O3 system operates effectively under neutral or weakly acidic/alkaline conditions, offering broad pH applicability for real-world wastewater matrices. • • In real industrial wastewater, the FeCo-O/O3 system exhibited excellent COD removal performance, validating its practical utility in both pre-treatment and advanced treatment stages.