Layer-by-layer assembly of graphene oxide membranes via electrostatic interaction and eludication of water and solute transport mechanisms
AssigneeUniversity of Maryland, College Park
InventorsBaoxia Mi, Meng Hu
Life of this patent
Estimating the term…
Abstract
A method for synthesizing a water purification membrane is presented. The method includes stacking a plurality of graphene oxide (GO) nanosheets to create the water purification membrane, the stacking involving layer-by-layer assembly of the plurality of GO nanosheets and forming a plurality of nanochannels between the plurality of GO nanosheets for allowing the flow of a fluid and for rejecting the flow of contaminants. The method further includes cross-linking the plurality of GO nanosheets by 1,3,5-benzenetricarbonyl trichloride on a polydopamine coated polysulfone support.
Claims20
A filtration apparatus comprising:
- a support substrate;
- and
- a graphene oxide membrane disposed on the support substrate, the graphene oxide membrane including a plurality of graphene oxide sheets, each of the graphene oxide sheets covalently coupled to an adjacent graphene oxide sheet via a cross-linker.
A filtration apparatus comprising:
- a support substrate;
- and
- a graphene oxide membrane disposed on the support substrate, the graphene oxide membrane including 5 to 25 layers of graphene oxide sheets, each of the graphene oxide sheets covalently coupled to an adjacent graphene oxide sheet via a cross-linker, wherein the graphene oxide membrane has a rejection rate of about 90% of Na2SO4, as measured with a 0.1 mM Na2SO4 solution.
A filtration apparatus comprising:
- a support substrate;
- and
- a graphene oxide membrane disposed on the support substrate, the graphene oxide membrane including 5 to 25 layers of graphene oxide sheets, each of the graphene oxide sheets covalently coupled to an adjacent graphene oxide sheet via a monomer cross-linker.
Dependencies are inferred from the claim text.