Figure 1

Characterization of TiO₂ hollow nanoboxes and TG composite. (a) Bright-field TEM images of the hollow TiO₂ nanoboxes. (b) TEM of TiO₂@rGO (TG composite). (c) The HRTEM shows the lattice spcing 0.35 nm (101). (d) corresponding SAED pattern. (e) STEM of hollow TiO₂.