▎ 摘　　要

To overcome the disadvantages of polyethersulfone (PES) as an ultrafiltration membrane material including hydrophobicity and low antibacterial properties, an aminated PES (aPES) membrane grafted with graphene oxide (GO) onto the membrane surface (aPES-GO) were prepared. The water flux of the aPES ultrafiltration membrane increased as the aPES content in the membrane increased, and when the aPES content in the membrane was 20 wt% or less, the solute rejection of the membrane was almost the same as that of PES. The water flux of the aPES-GO membrane increased further as the amount of grafted GO increased without a reduction in solute rejection. In addition, the aPES-GO membrane exhibited excellent antifouling characteristics due to the antibacterial properties provided by GO and the hydrophilicity originated from aPES and GO.