Core-Shell Hierarchical Fe/Cu Bimetallic Fenton Catalyst with Improved Adsorption and Catalytic Performance for Congo Red Degradation

The preparation of heterogeneous Fenton catalysts with both adsorption and catalytic properties has become an effective strategy for the treatment refractory organic wastewater. In this work, 4A-Fe@Cu bimetallic a three-dimensional core-shell structure were prepared by simple, template-free, surfactant-free methodology used in degradation Congo red (CR). results showed that open network positive charge surface catalyst could endow high capacity CR, reaching 432.9 mg/g. good property CR not only did inactivate site on but also promote contact between active sites accelerate process. exhibited higher activity than monometallic 4A@Cu and/or 4A-Fe due to low work function value. effects different pH, H2O2 dosages, dosages performance explored. conditions 7.2 mM H2O2, 2 g/L 4A-Fe@Cu, 1 solution, ratio reach 99.2% at pH 8. This provided guidance design high-performance Fenton-like catalysis dye wastewater treatment.