Synthesis of flexible cross-linked cryptomelane-type manganese oxide nanowire membranes and their application for U(VI) and Eu(III) elimination from solutions

•OMS-2 paper-like membranes were self-assembled easily.•OMS-2 membranes showed high sorption capacities of Eu(III) and U(VI) from wastewater.•OMS-2 membranes had extraordinary stability in radionuclides elimination.•The surface complexation and ion exchange were the main mechanisms.•OMS-2 membranes were superior materials in metal ions decontamination.