Separation Membrane and Methods of Preparation Thereof
AssigneeAspen Products Group, Inc.
InventorsMark D. Fokema, Decio Coutinho
Life of this patent
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Abstract
A membrane for fluid species transport includes a porous substrate and a selective-transport layer comprising 2-D-material flakes. The porous substrate defines surface pores with dimensions larger than 2 microns, and the selective-transport layer coats the porous substrate and spans across the surface pores. The porous substrate can be contacted with a liquid or coating to fill or coat the surface pores of the porous substrate. Next, a 2-D-material-flake solution is deposited on the porous substrate. Evaporation of solvent from the deposited 2-D-material-flake solution forms the selective-transport layer.
Claims21
A method for fabricating a membrane, the method comprising:
- contacting a porous substrate that contains surface pores with dimensions larger than 2 microns with a liquid or coating to fill or coat the surface pores of the porous substrate;
- then
- depositing a 2-D-material-flake solution on the porous substrate with the liquid-filled or coated surface pores to form a 2-D-material-flake-solution layer with a thickness of less than 40 microns;
- and then
- evaporating solvent from the 2-D-material-flake-solution layer to form a selective-transport layer on the porous substrate with the liquid-filled or coated surface pores.
A membrane for fluid-species transport, the membrane comprising:
- a porous substrate that defines surface pores with dimensions larger than 2 microns;
- and
- a selective-transport layer comprising 2-D-material flakes and coating the porous substrate and spanning across the surface pores.
Dependencies are inferred from the claim text.