Preparation and Characterization of Pure Rutile TiO₂ Nanoparticles for Photocatalytic Study and Thin Films for Dye-Sensitized Solar Cells

Figure 4

The TEM micrographs of r-TiO₂ samples hydrothermally treated at 220°C for (a) 1, (b) 5, (c) 10, (d) 15, (e) 20, and (f) 24 hrs.

(a)

(b)

(c)

(d)

(e)

(f)