A recyclable 3D porous catalyst derived from waste polyurethane foam: rGO-stabilized Cu-Fe bimetallic composite for bisphenol A removal via adsorption and peroxydisulfate activation - Qinwen Zhou; Libin Gao; Li Shi; Lin Zhang; Ruoyue Guo; Lijun Luo; Xi Ma; Fengzhi Jiang (Journal of Environmental Chemical Engineering, 2026)