Cocatalyst modification is an effective way to promote the separation of photogenerated electron-hole pairs.The reduced graphene oxide(r GO) with high electron transfer rate and the amorphous Ti(IV) compounds as hole cocatalyst were loaded on the surface of highly-efficient and flake-like Bi_2WO_6 nanoparticles by a hydrothermal-impregnation method to prepare Ti(IV)-r GO/Bi_2WO_6 visible-light-driven photocatalyst.It was found that the Ti(IV) and r GO single-cocatalyst modified Bi_2WO_6 exhibited an enhance...