▎ 摘　　要

Here we report that separately decorating TiO2 (P25) nanoparticles and CoOx cocatalyst on a single reduced graphene oxide (rGO) sheet results in an advanced photocatalyst, P25-rGO-Co, which exhibits enhanced photo catalytic performances for selective H-2 or O-2 evolution from water splitting. Characterization results show that rGO can not only efficiently accept and transport photogenerated electrons but also shuttle holes to CoOx cocatalyst simultaneously, achieving an efficient spatial charge separation on P25-rGO-Co, thus improving the half reaction efficiency. (C) 2016 Elsevier B.V. All rights reserved.