Graphene　oxide-based　filtration　membranes　with　photocatalytic　antifouling　function　have　been　successfully　synthesized　by　a　two-step　method　for　the　first　time.　First,　graphene　oxide　particles　composite　sheets　are　prepared　by　decorating　graphene　oxide　sheets　with　appropriate　amount　of　TiO2　nanoparticles,　which　can　be　assembled　into　filtration　membranes　with　suitable　permeation　and　retention　rates.　Then,　an　additional　TiO2　particle　layer　(P25)　with　strong　photocatalysis　activity　is　coated　on　these　films　by　filtration,　forming　hierarchical　structure　membranes.　The　filtration　properties　of　the　as-obtained　films　are　investigated　by　treating　dye　solution,　and　the　results　demonstrate　that　these　membranes　possess　favorable　photocatalytic　antifouling　function　under　UV　light　irradiation,　which　can　maintain　the　clean　films　and　their　filtration　properties,　broadening　the　horizon　for　the　vast　use　of　these　graphene-involved　films　in　water　purification.　©　2014　American　Chemical　Society.