Separation membranes formed from perforated graphene and methods for use thereof

摘要

Perforated graphene sheets can be used in forming separation membranes. Separation membranes of the present disclosure, which can be used in gas separation processes in some embodiments, can include one or more layers of perforated graphene and one or more layers of another membrane material. Methods for separating a gas mixture can include contacting a gas mixture with the separation membranes, and transiting one or more of the gases through the perforated graphene so as to affect separation.

主权项

1. A composite permeable membrane for separation of a first gas from a second gas; said composite permeable membrane comprising:
at least one layer of a perforated permeable two-dimensional material; and at least one membrane of a material other than a two-dimensional material, said membrane being characterized by a permeability for said first gas greater than or equal to 1 Barrer, wherein said composite permeable membrane is constructed of said at least one layer of the perforated permeable two-dimensional material and said at least one membrane and arranged to provide preferential transport of said first gas relative to said second gas through said at least one membrane and said at least one layer of said perforated permeable two-dimensional material, wherein said at least one membrane and said at least one layer of said perforated permeable two-dimensional material are provided in a stacked multilayer geometry, and wherein said each of said at least one layer of said perforated permeable two-dimensional material provided in said stacked multilayer geometry is independently positioned between first and second adjacent membranes.