Enhanced heterogeneous Electro-Fenton catalysis using CNT/MoS2/FeCo-LDH cathode membranes for efficient phenol removal from wastewater

Herein, we innovatively crafted a novel CNT/MoS 2 /FeCo-LDH cathode membrane using a facile vacuum filtration method. Benefiting from the unique heterostructure between FeCo-LDH and MoS 2 , the prepared CNT/MoS 2 /FeCo-LDH cathode membranes catalyzed the production of high-concentration H 2 O 2 (7.59 mg/L) at a low current density of 1.50 mA/cm 2 . The peak degradation efficiency of phenol (98.80   %) was reached in only 60 min. Under optimized operating conditions, the phenol removal rate of the CNT/MoS 2 /FeCo-LDH cathode membrane remained above 80.00   % within a wide pH range (3.0–9.0), demonstrating excellent adaptability. The synergistic incorporation of Mo, Fe, and Co ions facilitated additional chemical reaction pathways for Fenton-like reactions, thereby significantly enhancing hydrogen peroxide production. Notably, our approach exhibited moderate total organic carbon degradation efficiency, even for the actual pretreatment of coking wastewater, presenting a promising strategy for addressing recalcitrant industrial wastewater.