Figure 4

MB and MO degradation for the three samples. (a) MB and (b) MO degradation for the three samples: the solution (squares), the solution with the TiO₂ flat film (circles), and the solution with the TiO₂/Si-template sample (triangles). Measurements in the dark are indicated with the gray-colored region, while the ones under the UV irradiation are indicated with the white-colored region. The linear fits of the experimental data are indicated with the continuous lines.