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The post-separation of powder catalysts restricts the practical application of peroxymonosulfate (PMS)-based advanced oxidation technology. Hence, we fabricated CuO-Fe₂O₃-modified Ni foam (CFO-NF) using a facile hydrothermal method for an efficient PMS activation. The CFO-NF/PMS system could achieve a 97.9% tetracycline hydrochloride (TC) removal efficiency in 60 min with four pieces of CFO-NF and 0.4 mmol L⁻¹ of PMS. The removal efficiency was maintained at ˃85% even after five cycles, indicating the excellent stability of CFO-NF composites. The conversion among Fe(III)/Fe(II), Cu(II)/Cu(I), and Ni(III)/Ni(II) accelerated the PMS decomposition, verifying the synergy between CuO-Fe₂O₃ and Ni foam. The trapping experiments and EPR detection confirmed that abundant active species (•OH, SO₄^•−, O₂^•−, and ¹O₂) were produced in the CFO-NF/PMS system, accounting for the existence of radical pathways and a non-radical pathway, in which ¹O₂ (non-radical pathway) was dominated. This study developed a novel CuO-Fe₂O₃-modified Ni foam with a superior PMS activation performance, a high stability, and a recoverability for eliminating refractory organic pollutants.