Electro-synergy for the degradation of refractory organic pollutants: coupling heterogeneous electro-Fenton and electro-oxidation

This study reports the synthesis of an iron-nickel foam-derived cathode material (INF-600 °C) <i>via</i> a simple chemical impregnation and high-temperature calcination process. The as-prepared material was employed as a cathode to construct a synergistic system integrating heterogeneous electro-Fenton (EF) and electro-oxidation (EO) processes. This system efficiently generates hydroxyl radicals, the primary reactive oxygen species, enabling rapid degradation of tetracycline (TC) over a broad pH range (3-11).