Bacteria AuTiO2  k/min
0 ug/ml 10 ug/ml 20 ug/ml
Escherichia coli 0.082 0.049 0.042
Staphylococcus aureus 0.054 0.051 0.041
Table 2: Inactivation rate constant of photocatalytic inactivation of Escherichia coli, Staphylococcus aureus in solar irradiation.