Antibacterial Activity of Visible Light-Activated TiO₂ Thin Films with Low Level of Fe Doping

Figure 7

Antibacterial rate of (a) bare TiO₂, (b) 0.1 at%, (c) 0.5 at%, (d) 1.0 at%, (e) 2.0 at%, and (f) 3.45 at% of Fe-doped TiO₂ against E. coli.