ACCELERATING TRANSPORT THROUGH GRAPHENE MEMBRANES

摘要

Technologies are generally described for a membrane that may incorporate a graphene layer perforated by a plurality of nanoscale pores. The membrane may also include a gas sorbent that may be configured to contact a surface of the graphene layer. The gas sorbent may be configured to direct at least one gas adsorbed at the gas sorbent into the nanoscale pores. The nanoscale pores may have a diameter that selectively facilitates passage of a first gas compared to a second gas to separate the first gas from a fluid mixture of the two gases. The gas sorbent may increase the surface concentration of the first gas at the graphene layer. Such membranes may exhibit improved properties compared to conventional graphene and polymeric membranes for gas separations, e.g., greater selectivity, greater gas permeation rates, or the like.

主权项

1. A membrane, comprising:
a graphene layer perforated by a plurality of nanoscale pores; and a gas sorbent comprising a material that contacts a surface of the graphene layer, wherein the material adsorbs at least one gas and is permeable to the adsorbed at least one gas such that the gas sorbent is configured to direct the at least one gas into the plurality of nanoscale pores, and wherein a hydrogen and methane separation selectivity of the membrane is between about 200:1 and about 10̂23:1.