▎ 摘　　要

Graphene oxide (GO) has been continuously demonstrated as promising membrane for water purification due to its excellent hydrophilic surface properties and special interconnected 2D nanofluidic channels for ion/molecule transport. In this work, to resolve the membrane fouling problem for GO membrane, GO/TiO2 membrane with the multifunction of concurrent water filtration and photodegradation for pollutants was successfully fabricated by a one-step facile approach. Crossflow filtration was applied to evaluate the separation performance by simulating the real industrial process. The as-prepared GO/TiO2 membrane exhibited remarkable ability on photocatalytic degradation of Methylene Blue under UV light, 92% of MB could be degraded after 110 min irradiation with 4 mg of photocatalyst. The membrane fouling could be effectively alleviated with UV light irradiation, resulting in a high flux recoverability of 96% after 100 min. Furthermore, the mechanism of membrane fouling processes for GO/TiO2 membrane under crossflow filtration was analyzed based on Darcylaw model. The result showed adsorption and cake layer which accounted for 46.3% and 46.0% of membrane resistance were main factors that cause GO/TiO2 membrane fouling. The excellent performance of GO/TiO2 membrane provided valuable insight for its industrial application in clean water production field.