The traditional ion-exchange membranes face the trade-off effect between the ion flux and perm-selectivity. which limits their application for selective ion separation. Herein. we amalgamated various amounts of the ZSM-5 with the polyvinyl alcohol as ions transport pathways to improve the permeability of monovalent cations and exclusively reject the divalent cations. https://unitedssports.shop/product-category/cyclist-accessories-helmets-junior/