Electron transfer faster than charge recombination process is a key desideratum in improving photocatalytic efficiency for realizing solar energy conversion and environmental remediation applications.Heterojunction photocatalytic system represents a typical strategy for enhancing charge carriers separation.Indeedly, the rate of electron transfer is dictated to a great extent by the interface character of heterojunction system.Imitating by the stacked structure of granum in green plants, two-dimensional (2-D) TiO2 nanosheet on graphene platform was fabricated by a feasible solvothermal process.