Figure 3

Fluorescence microscopic images of E. coli O157:H7 (0.5 mg mL⁻¹, 30 mL) treated with C₇₀-TiO₂ hybrid (1 mg mL⁻¹) without and under visible light irradiation.

(A) Only C₇₀-TiO₂ hybrid, (B) the mixture of photocatalyst and E. coli O157:H7 before irradiation and after irradiation by visible light for (C) 1 h and (D) 2 h.