Visible light driven S-scheme heterojunction Zn3In2S6/Bi2MoO6 for efficient degradation of metronidazole

The Zn3In2S6/Bi2MoO6 S-scheme heterojunctions with excellent redox ability were prepared. The photocatalyst was synthesized by hydrothermal reaction. In photocatalytic materials with different mass ratios, the highest reaction constant (Zn3In2S6/Bi2MoO6-10%) is 0.0463 min−1, which is 2.17 times higher than that of single Zn3In2S6. The experiment also proved that the Zn3In2S6/Bi2MoO6 had high stability. At the same time, the preparation cost of Zn3In2S6/Bi2MoO6 is also lower than that of other high-efficiency photocatalysts. The degradation path of metronidazole was inferred from the results of LC-MS. This study can provide a strong basis for the degradation of pollutants by S-scheme heterojunctions.