E. coli Bacteriostatic Action Using TiO₂ Photocatalytic Reactions

Figure 8

The photocatalytic bacterial inactivation, given the initial E. coli concentrations in NB and 0.85% NaCl of 10², 10⁴, 10⁶, and 10⁸ CFU·mL⁻¹: (a) NB treated with SG-TiO₂ thin film and UVA relative to the control (SG/NB/dark and NB/UVA), (b) NaCl treated with SG-TiO₂ thin film and UVA relative to the control (SG/NaCl/dark and NaCl/UVA), (c) NB treated with SP-TiO₂ thin film and UVA relative to the control (SP/NB/dark and NB/UVA), and (d) NaCl treated with SP-TiO₂ thin film and UVA relative to the control (SP/NaCl/dark and NaCl/UVA).

(a)

(b)

(c)

(d)