Mechanism of Ag-enhanced CuBi2O4 inactivation of Escherichia coli in a photocatalytic Fenton system

In this work, Ag/CuBi2O4 composite photocatalyst films with excellent photocatalytic sterilization properties were prepared by photodeposition. The photocatalytic activity of silver-modified CuBi2O4 (Ag/CuBi2O4) under the photocatalytic-Fenton coupling system was verified by its inactivation rate of Escherichia coli in seawater. The results showed that the photocatalytic sterilizing performance of CuBi2O4 loaded with Ag in the presence of trace amounts of H2O2 was significantly improved. 15Ag/CuBi2O4 possessed the optimal photocatalytic activity, and its sterilizing rate in 30 min could reach 96.6