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US 10,183,259 B2Granted
Ion removal from water by ultra-thin graphene-based membranes
AssigneeUniversity of South Carolina
InventorMiao Yu
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Abstract
A graphene-based membrane, along with its methods of formation and use, is provided. The graphene membrane includes at least two graphene-oxide layers. Each graphene-oxide layer has a plurality of graphene-oxide flakes, with each graphene-oxide flake having a planar graphene structure with oxygen moieties extending therefrom. The graphene-based membrane can have a thickness of about 2 nm to about 20 nm. Such a graphene-based membrane can be utilized to remove ions from water.
Claims7
A graphene-based membrane, comprising:
- at least two graphene-oxide layers, wherein each graphene-oxide layer comprises a plurality of graphene-oxide flakes, and wherein each graphene-oxide flake comprises a planar graphene structure with oxygen moieties extending therefrom;
- and
- linking molecules positioned between adjacent graphene-oxide layers and forming an interlayer, wherein the linking molecules include naphthalene, anthracene, phenanthrene, pyrene, benzopyrene, or mixtures thereof, and
- wherein the graphene-based membrane has a thickness of about 2 nm to about 20 nm.
1 more element
A method of removing ions from water, the method comprising:
- passing water through a graphene-based membrane comprising at least two graphene-oxide layers, wherein each graphene-oxide layer comprises a plurality of graphene-oxide flakes, and wherein each graphene-oxide flake comprises a planar graphene structure with oxygen moieties extending therefrom;
- and linking molecules positioned between adjacent graphene-oxide layers and forming an interlayer, wherein the linking molecules include naphthalene, anthracene, phenanthrene, pyrene, benzopyrene, or mixtures thereof, and
- wherein the graphene-based membrane has a thickness of about 2 nm to about 20 nm.
Dependencies are inferred from the claim text.