▎ 摘　　要

NOVELTY - High-throughput oxidation graphene hollow fiber composite nanofiltration membrane comprises ceramic or polymer hollow fiber; porous surface nanometer fiber which is one of hydroxyapatite, titanium dioxide, polyaniline with diameter of 50-200 nanometer (nm) and length is 1-100 microns; pore diameter of porous graphene oxide is 2-50 nm; mass ratio of nano fibers to porous graphene oxide in porous graphene oxide separating layer embedded with nano fibers is 1: 10-10: 1; and thickness of separating layer is 10-900 nm. USE - High-throughput oxidation graphene hollow fiber composite nanofiltration membrane comprises ceramic or polymer hollow fiber; porous surface nanometer fiber which is one of hydroxyapatite, titanium dioxide, polyaniline with diameter of 50-200 nanometer (nm) and length is 1-100 microns; pore diameter of porous graphene oxide is 2-50 nm; mass ratio of nano fibers to porous graphene oxide in porous graphene oxide separating layer embedded with nano fibers is 1: 10-10: 1; and thickness of separating layer is 10-900 nm. ADVANTAGE - The high-throughput oxidation graphene hollow fiber composite nanofiltration membrane enables to effectively shorten molecular transmission path, which improves flux of composite film, maintain high selectivity of water and dye; has good separation effect for dye in water, high interception rate and high water flux. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing high-throughput oxidation graphene hollow fiber composite nanofiltration membrane, which involves: (a) oxidizing graphene by dispersing in hydrogen peroxide solution, heating and reacting, centrifuging to remove particles, diluting to specified concentration in deionized water for obtaining dispersion of graphene porous, where concentration of dispersion graphene dispersion is 2-10 mg/mL, mass ratio of hydrogen peroxide to oxidation graphene 1:20-1:5, heating reaction temperature is 50-120degrees Celsius, heating time is 2-6 hours, concentration of dispersion graphene is 0.2-200 microg/mL; (b) adding nano fibers into deionized water, stirring and ultrasonically dispersing to prepare nano fiber dispersion liquid, and uniformly mixing nano fiber dispersion liquid and porous graphene oxide dispersion liquid to prepare mixed solution of nano fibers and porous graphene oxide, where concentration of nanofiber dispersion liquid is 0.2-200 microg/mL and mass ratio of nano fibers to porous graphene oxide is 1:10-10:1; (c) immersing hollow fiber substrate in mixed solution, depositing solute on surface of hollow fiber substrate through vacuum suction, and performing vacuum drying to obtain porous graphene oxide hollow fiber composite nanofiltration membrane embedded with nanofibers.