Patent ID: 9713794
Date: 2017-07-25
CPC Classifications: B01D,C02F,Y02A

Claim:
1. A separation membrane comprising: a polymer support; and at least one graphene monolayer on at least one surface of the polymer support, the graphene monolayer being 2-dimensional and planar-structured, wherein the graphene monolayer includes a plurality of grains defined by grain boundaries, the grain boundaries provide gaps present along the grain boundaries between the grains in the graphene monolayer, and the gaps between the grains in the graphene are configured to pass a target substance to separate the target substance from a mixture containing the target substance, wherein the at least one graphene monolayer on the polymer support has a first fluid permeability in a range of about 400 Barrer to about 1200 Barrer, and wherein the at least one graphene monolayer on the polymer support has an first fluid/second fluid selectivity of at least about 1.5.