Interfacial assembly of a durable superhydrophobic polyurethane sponge with “scalelike” structures for efficient oily emulsion separation

A durable superhydrophobic/superlipophilic polyurethane sponge with “scalelike” pore structures was synthesized by interfacial assembly via in situ anchoring of SiO 2 and H-CNTs accompanied by the bonding effect and active sites from polydopamine.