▎ 摘　　要

NOVELTY - Method of preparing nanosheet assembled hybrid membrane involves adding melamine in aluminum crucible, heating using a muffle furnace, placing the powder in an aluminum crucible and raising the temperature to obtain a carbon triazine nanosheet powder, preparing graphene oxide solution, formulating the carbon triazine nanosheet powder into aqueous solution, mixing the graphene oxide solution with the aqueous solution of carbon triazine nanosheet, vacuum-filtering and drying the microfiltration membrane deposited with graphene oxide and carbon triazine to obtain the product. USE - The method is useful for preparing nanosheet assembled hybrid membrane (claimed). ADVANTAGE - The method is convenient and simple. The prepared nanosheet assembled hybrid membrane provides sunlight-driving and anti-pollution effect, has improved permeation flux of 101.33-4536 Lm-2 h-1 bar-1 and the flux recovery after the solar irradiation from 50.53% to 100% compared with the graphene oxide membrane and is suitable for oil-aqueous emulsion separation. DETAILED DESCRIPTION - Method of preparing nanosheet assembled hybrid membrane involves (A) (a) preparing carbon triazine nanosheet by adding suitable amount of melamine in an aluminum crucible under the air atmosphere, heating using a muffle furnace, raising the temperature to 550 degrees C for 4 hours to obtain a carbon triazine yellow powder, placing the powder in an aluminum crucible, raising the temperature to 480 degrees C using a muffle furnace and maintaining the temperature at 480 degrees C for 2 hours to obtain a carbon triazine nanosheet powder, and (b) preparing nanosheet assembled hybrid membrane by (i) preparing 1 mg/l graphene oxide solution, (ii) formulating the carbon triazine nanosheet powder into 1 mg/l carbon triazine nanosheet aqueous solution, and (iii) mixing the graphene oxide solution with the aqueous solution of carbon triazine nanosheet in a volume ratio of 1:1 to obtain a mixed solution, vacuum-filtering the mixed solution through a microfiltration membrane of mixed cellulose having a pore size of 0.22 mu m at a volume area ratio of 40 ml/12.56 cm2 and drying the microfiltration membrane deposited with graphene oxide and carbon triazine at 50 degrees C for 12 hours to obtain the nanosheet assembled hybrid ultrafiltration membrane having a thickness of 35.8-78.7 nm and a permeation flux of 101.33-346.67 Lm-2 h-1 bar-1, or (B) (a) preparing carbon triazine loaded titanium dioxide nanosheet using titanium tetra-n-butyl titanate as precursor of titanium dioxide and arginine as catalyst by biomimetic mineralization method, and (b) preparing nanosheet assembled hybrid membrane by (i) preparing 1 mg/l graphene oxide solution, (ii) formulating the carbon triazine loaded titanium dioxide nanosheet into 1 mg/l carbon triazine loaded titanium dioxide nanosheet aqueous solution, and (iii) mixing the graphene oxide solution with the aqueous solution of carbon triazine loaded titanium dioxide nanosheet in a volume ratio of 10-30:20-180 to obtain a mixed solution, vacuum-filtering the mixed solution through a microfiltration membrane of mixed cellulose having a pore size of 0.22 mu m at a volume area ratio of 54.2-200 ml/12.56 cm2 and drying the microfiltration membrane deposited with graphene oxide and carbon triazine loaded titanium dioxide at 50 degrees C for 12 hours to obtain the nanosheet assembled hybrid ultrafiltration membrane having a thickness of 35.8-78.7 nm and a permeation flux of 101.33-4536 Lm-2 h-1 bar-1.