A facile synthesis of graphene-supported mesoporous TiO2 hybrid sheets with uniform coverage and controllable pore diameters.

Mesoporous TiO 2 has attracted extensive research interest due to its promising application in photocatalysis, but which is inevitably diminished by the electro-hole pair recombination. The incorporation of graphene into mesoporous TiO 2 can improve the properties, there are however great challenges in realizing the full potential of graphene due to its poor dispersion in organic solvents and the hard nucleation of TiO 2 on its surface. Herein, we present a novel and easy approach for the synthesis of two-dimensional sandwich-like graphene-supported mesoporous TiO 2 hybrid sheets with tailored morphologies, uniform coverage and controllable pore diameters and surface areas, leading to improved photocatalytic performance in comparison with bare mesoporous TiO 2 spheres. [ABSTRACT FROM AUTHOR]