The present disclosure provides a metal-organic framework material/membrane composite material, a preparation method and a use thereof, which belongs to the technical field of water treatment. The method includes: mixing a membrane material with an alkali liquor, and performing a hydrolysis to obtain a hydrolyzed membrane; impregnating the hydrolyzed membrane in a metal salt aqueous solution and a framework organic solution in sequence, to form a metal-organic framework material/membrane composite material. In the composite material obtained by this method, the bonding strength between the membrane material and the metal-organic framework material is high, and it is not easy to separate them during the use and the composite material could be widely used. At the same time, the metal-organic framework material/membrane composite material obtained by this method has dual functionality, and thus could improve the efficiency of water treatment.

The present disclosure provides a metal-organic framework material/membrane composite material, a preparation method and a use thereof, which belongs to the technical field of water treatment. The method includes: mixing a membrane material with an alkali liquor, and performing a hydrolysis to obtain a hydrolyzed membrane; impregnating the hydrolyzed membrane in a metal salt aqueous solution and a framework organic solution in sequence, to form a metal-organic framework material/membrane composite material. In the composite material obtained by this method, the bonding strength between the membrane material and the metal-organic framework material is high, and it is not easy to separate them during the use and the composite material could be widely used. At the same time, the metal-organic framework material/membrane composite material obtained by this method has dual functionality, and thus could improve the efficiency of water treatment.

A membrane filter is provided. The membrane filter including an ordered functional nanoporous material (OFNM) defining a layer and a membrane support. The layer having a two-dimensional structure and defining a plurality of pores and imparting to the membrane filter a permeance of at least 900 Lm.sup.−2h.sup.−1bar.sup.−1 and a rejection of at least 60% as to a solvent containing a filterable species.

A membrane filter is provided. The membrane filter including an ordered functional nanoporous material (OFNM) defining a layer and a membrane support. The layer having a two-dimensional structure and defining a plurality of pores and imparting to the membrane filter a permeance of at least 900 Lm.sup.−2h.sup.−1bar.sup.−1 and a rejection of at least 60% as to a solvent containing a filterable species.

A graphene-based membrane and a method of producing the same are disclosed. The graphene-based membrane may include a graphene-polymer composite, wherein the graphene-polymer composite may consist of an amine functionalized graphene and a polymer containing an anhydride group as a linker for linking the amine functionalized graphene to the polymer. The graphene-based membrane may be constructed of a single-layer. A method may include reacting a polymer containing an anhydride with an amine functionalized graphene in presence of a solvent to form an intermediate product; and thermal imidizing the intermediate product to form a graphene grafted polymer composite for use in fabricating a graphene-based membrane.

A graphene-based membrane and a method of producing the same are disclosed. The graphene-based membrane may include a graphene-polymer composite, wherein the graphene-polymer composite may consist of an amine functionalized graphene and a polymer containing an anhydride group as a linker for linking the amine functionalized graphene to the polymer. The graphene-based membrane may be constructed of a single-layer. A method may include reacting a polymer containing an anhydride with an amine functionalized graphene in presence of a solvent to form an intermediate product; and thermal imidizing the intermediate product to form a graphene grafted polymer composite for use in fabricating a graphene-based membrane.

A polymer membrane, methods of gas separation utilizing the polymer membrane, and methods of producing the polymer membrane are disclosed herein. The polymer membrane includes a crosslinked polyethylene glycol network polymer according to formula (I): ##STR00001##

A polymer membrane, methods of gas separation utilizing the polymer membrane, and methods of producing the polymer membrane are disclosed herein. The polymer membrane includes a crosslinked polyethylene glycol network polymer according to formula (I): ##STR00001##

The present disclosure provides an ion-exchange membrane that includes a supporting substrate impregnated with an ion-exchange material. The supporting substrate includes an imprinted non-woven layer, and the imprinting includes a plurality of deformations at a surface density of at least 16 per cm.sup.2. The supporting substrate may lack a reinforcing layer. In some examples, the supporting substrate may include only a single layer of the imprinted non-woven fabric.

The present disclosure provides an ion-exchange membrane that includes a supporting substrate impregnated with an ion-exchange material. The supporting substrate includes an imprinted non-woven layer, and the imprinting includes a plurality of deformations at a surface density of at least 16 per cm.sup.2. The supporting substrate may lack a reinforcing layer. In some examples, the supporting substrate may include only a single layer of the imprinted non-woven fabric.