Disclosed is an anion exchange membrane. The anion exchange membrane includes: a porous polymer support; and an anion exchange polymer, wherein the anion exchange polymer is situated on a surface and in pores of the porous polymer support, anion exchange groups of the anion exchange polymer are uniformly distributed on the surface and in the pores of the porous polymer support, the porous polymer support has a basis weight of about 10 g/m.sup.2 to about 60 g/m.sup.2, and the anion exchange polymer may be a crosslinked product of a composition including a crosslinkable monomer represented by Formula 1.

At least one aspect of the present disclosure relates to a two-dimensional mineral membrane including a first phyllosilicate material and a second phyllosilicate material crosslinked with the first phyllosilicate material, where a surface of at least one of the first phyllosilicate material or the second phyllosilicate material includes at least one functional group. Another aspect of the present disclosure relates to a method of producing a two-dimensional mineral membrane. The method includes providing a first phyllosilicate material and a second phyllosilicate material, exfoliating a mixture of the first phyllosilicate material and the second phyllosilicate material into a plurality of flakes, crosslinking the first phyllosilicate material with the second phyllosilicate material, functionalizing a surface of at least one of the first phyllosilicate material or the second phyllosilicate material, and restacking the plurality of flakes to form a membrane.

The present disclosure relates to a membrane having uniform pore size and pore arrangement. The present disclosure provides a membrane including a plurality of pores, wherein the diameter of the plurality of pores is 100 m or less, the porosity is 20 to 80%, the thickness is 3 to 500 m, and the membrane is a single layer membrane.