Water separation composite membrane
A water separation composite membrane is provided. The water separation composite membrane includes a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.
1. A water separation composite membrane, comprising:
a carrier with a plurality of pores; and
a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers and an organic compound distributed between any two adjacent graphene oxide layers, wherein the organic compound has a structure represented by Formula (I) or Formula (II)
wherein X is independent —OH, —NH 2 , —SH,
R 1 and R 2 are independent hydrogen, C 1-12 alkyl; A is
and, n is 2-3 when X is —OH, —NH 2 , or —SH, and n is 0-1 when X if
2. The water separation composite membrane as claimed in claim 1 , wherein the carrier has a plurality of pores, and the carrier is made of a polymer having a repeat unit of
3. The water separation composite membrane as claimed in claim 2 , wherein the pores of the carrier have a diameter between 100 nm and 300 nm.
4. The water separation composite membrane as claimed in claim 1 , wherein the polymer is polycarbonate or polyamide.
5. The water separation composite membrane as claimed in claim 1 , wherein the selective layer has a thickness between 200 nm and 4000 nm.
6. The water separation composite membrane as claimed in claim 1 , wherein the selective layer has a thickness between 800 nm and 3000 nm.
7. The water separation composite membrane as claimed in claim 1 , wherein the organic compound is
8. The water separation composite membrane as claimed in claim 1 , wherein the organic compound further reacts with the graphene oxide layer.
9. The water separation composite membrane as claimed in claim 1 , wherein there is covalent bond, hydrogen bond, or ionic bond between the organic compound and the graphene oxide layer.
10. The water separation composite membrane as claimed in claim 1 , wherein there is an interval between any two adjacent graphene oxide layers, and a swelling degree of the interval is between 0.1% and 20.0%.
11. The water separation composite membrane as claimed in claim 1 , wherein the weight ratio of the organic compound to the graphene oxide layer is from 0.1 to 80.
12. The water separation composite membrane as claimed in claim 1 , wherein the water separation composite membrane has a water vapor transmission rate between 5×10 −6 mol/m 2 sPa and 5×10 −5 mol/m 2 sPa.
13. The water separation composite membrane as claimed in claim 1 , wherein the water separation composite membrane has a water/air separation factor between 1000 and 1×10 7 .