Nanoporous membranes and methods for making the same

摘要

A method for making a nanoporous membrane is disclosed. The method provides a composite film comprising an atomically thin material layer and a polymer layer, and then bombarding the composite film with energetic particles to form a plurality of pores through at least the atomically thin material layer. The nanoporous membrane also has a atomically thin material layer with a plurality of apertures therethrough and a polymer film layer adjacent one side of the graphene layer. The polymer film layer has a plurality of enlarged pores therethrough, which are aligned with the plurality of apertures. All of the enlarged pores may be concentrically aligned with all the apertures. In one embodiment the atomically thin material layer is graphene.

主权项

1. A method for making a nanoporous membrane, comprising:
providing a composite film comprising an atomically thin material layer and a polymer film; bombarding said composite film with energetic particles to form a plurality of pores through said atomically thin material layer and a plurality of tracks of chemical functionality through said polymer film; and etching said tracks to produce a plurality of enlarged pores in said polymer film, wherein a number of the enlarged pores in said polymer film are aligned with pores through said atomically thin material layer, wherein the polymer film is non-porous prior to being bombarded with energetic particles.