Fig. 2. (A) Schematic illustration of the preparation of TiO₂–Ag composite; SEM images of (B and C) TiO₂ compact layer, (D and E) TiO₂ nanorod arrays, and (F, G) TiO₂–Ag composite; (H) EDS spectrum of TiO₂–Ag composite; (I) XRD patterns of TiO₂ compact layer, TiO₂ nanorod arrays and TiO₂–Ag composite.