Construction of 3D ternary layered double hydroxides on nickel foam for enhancing dielectric barrier discharge plasma to degrade DUR: Performance, mechanism and energy efficiency

•The matrix NiF participated in the formation and construction of the 3D ternary LDH.•Established DBDP + ZnFe-LDH/NiF was an efficient, robust, and energy-wise system for DUR degradation.•Ternary metals electron transfer promoted the sustainability generated of functional active species in DBDP.•DFT calculation and experiments illustrated the possible DUR degradation pathway.