Ternary　hybrids　of　(reduced　graphene　oxide)-(CdS　nanowire)-TiO2　nanocomposites　(CTG)　featuring　a　large　two-dimensional　(2D)　flat　structure　have　been　successfully　synthesized　via　a　simple　surface　charge　promoted　self-assembly　method.　Compared　to　the　curly　(reduced　graphene　oxide)-(CdS　nanowire)　nanocomposites　(CG)　synthesized　by　a　similar　approach,　CTG　possesses　a　large　2D　flat　structure,　which　not　only　provides　high　optical　transparency　and　a　large　surface　area　but　also　facilitates　the　migration　of　photogenerated　electrons.　This　large　2D　flat　structure　of　CTG　leads　to　increased　optical　absorption　of　visible　light　and　increased　electrical　conductivity　as　compared　to　the　curly　CG,　which　is　attributed　to　the　fact　that　the　large　2D　flat　structure　of　reduced　graphene　oxide　(RGO)　in　CTG　provides　more　efficient　contact　between　light　and　the　RGO　sheets　and　facilitates　the　transfer　of　charge　carriers.　Experimental　evidence　has　proven　that　negatively　charged　TiO2　nanoparticles　(NPs)　both　on　the　surfaces　of　the　CdS　nanowires　(CdS　NWs)　and　on　the　RGO　sheets　can　prevent　the　RGO　sheets　from　becoming　curly　or　aggregated　as　a　result　of　electrostatic　repulsion,　thereby　forming　the　large　2D　flat　structure　of　CTG.　In　addition　to　using　RGO　as　an　electron　＇sink＇　to　improve　the　transfer　of　photogenerated　electron-hole　pairs　(EHPs)　from　CdS　NWs,　the　TiO2　NPs　on　CdS　NWs　are　able　to　further　boost　the　transfer　of　charge　carriers　in　the　ternary　CTG　system　due　to　the　suitable　energy　band　match　between　TiO2　and　CdS.　Such　efficient,　spatially　separated　charge　carriers　make　CTG　a　versatile　visible　light　photocatalyst　for　photo-redox　processes.　This　work　provides　a　new,　simple　strategy　to　construct　these　large　2D　flat　structured　RGO-based　multi-component　composites　by　using　the　surface　charge　properties　of　materials　to　efficiently　utilize　their　respective　unique　electronic　properties　toward　diverse　photo-redox　processes　in　both　energy　conversion　and　environmental　purification.　©　2013　The　Royal　Society　of　Chemistry.