MEMBRANES COMPRISING GRAPHENE
First Claim
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1. A membrane comprising:
- a porous matrix layer; and
,one or more graphene compounds.
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Abstract
A selective membrane, for example an ultrafiltration, nanofiltration or reverse osmosis membrane, has a layer comprising flakes of graphene, graphene oxide, reduced graphene oxide, or functionalized variations. The flakes may form a layer themselves, be embedded in the surface of a layer of another compound, or be dispersed in a layer of another compound. In some cases, the flakes functions as a selective membrane. In other cases, the flakes modify the properties of a membrane, for example by making the membrane more hydrophilic. In yet other cases, the flakes function as a bonding agent between layers of a membrane.
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Citations
26 Claims
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1. A membrane comprising:
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a porous matrix layer; and
,one or more graphene compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of making a membrane comprising steps of:
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coating a substrate with a polymeric membrane solution; dispersing flakes comprising one or more of graphene compounds on or in the polymeric membrane solution; curing the polymeric membrane solution to form a porous support; and
,coating the porous support with a supported layer comprising one or more graphene compounds. - View Dependent Claims (24, 25)
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26. A method of making a membrane comprising:
coating a porous support in membrane with a polymer and dispersing flakes on or in at least one polymeric reactant.
Specification