Functionalized single-layer graphene-based thin film composite and method of producing the same
AssigneeNgee Ann Polytechnic
InventorsJames Antony Prince, Sowrirajalu Bhuvana, Xiaoxiao Song, Gurdev Singh
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Abstract
A functionalized single-layer graphene-based thin film composite and method of producing the same are disclosed. Furthermore, a functionalized single-layer graphene-based thin film composite having water channels for low pressure desalination and method of producing the same are disclosed.
Claims16
A functionalized single-layer graphene-based thin film composite comprising a first component functionalized with amine and acid functional groups and a second component having at least a —COCI functional group that forms amide linkages with the first component to form a plurality of water channels within the thin film composite,
- wherein the first component and the second component are each a graphene, functionalized with the respective functional group(s) and the graphene is selected from the group consisting of exfoliated graphene nanoplatelets, pristine graphene, graphene nanosheets, functionalized graphene and chemically converted graphene;
- and
- wherein the second component is an acid chloride modified graphene.
A graphene-based thin film composite membrane comprising:
- (a) a porous substrate;
- and
- (b) a functionalized single-layer graphene-based thin film composite comprising a first component functionalized with amine and acid functional groups and a second component having at least a —COCI functional group that forms amide linkages with the first component to form a plurality of water channels within the thin film composite,
- wherein the first component and the second component are each a graphene, functionalized with the respective functional group(s) graphene nanoplatelets, pristine graphene, graphene nanosheets, functionalized graphene and chemically converted graphene;
- and
- wherein the second component is an acid chloride modified graphene.
A method of producing a functionalized single-layer graphene-based thin film composite membrane, the method comprising:
- (i) pretreating the surface of a porous substrate membrane with a first component functionalized with amine and acid functional groups;
- (ii) drying the pretreated porous substrate membrane;
- and
- (ii) contacting the pretreated porous substrate membrane with a second component having at least a —COCl functional group that forms amide linkages with the first component deposited onto the surface of the porous substrate to form a thin film composite layer having a plurality of water channels on the said porous substrate,
- wherein the first component and the second component are each a graphene, functionalized with the respective functional group(s), and the graphene is selected from the group consisting of exfoliated graphene nanoplatelets, pristine graphene, graphene nanosheets, functionalized graphene and chemically converted graphene;
- and
- wherein the second component is an acid chloride modified graphene.
Dependencies are inferred from the claim text.