Graphene membrane with regular angstrom-scale pores

摘要

Technologies are generally described for perforated graphene monolayers and membranes containing perforated graphene monolayers. An example membrane may include a graphene monolayer having a plurality of discrete pores that may be chemically perforated into the graphene monolayer. The discrete pores may be of substantially uniform pore size. The pore size may be characterized by one or more carbon vacancy defects in the graphene monolayer. The graphene monolayer may have substantially uniform pore sizes throughout. In some examples, the membrane may include a permeable substrate that contacts the graphene monolayer and which may support the graphene monolayer. Such perforated graphene monolayers, and membranes comprising such perforated graphene monolayers may exhibit improved properties compared to conventional 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 monolayer including a plurality of discrete pores that are chemically perforated therein, each of the plurality of discrete pores having a substantially uniform pore size characterized by one or more carbon vacancy defects in the graphene monolayer such that the graphene monolayer has substantially uniform pore sizes throughout; and a permeable substrate arranged to contact the graphene monolayer, wherein the permeable substrate includes one or more of a polymer, a metal mesh, and/or porous ceramic.