Visible Light Driven S-Scheme Heterojunction Zn3in2s6/Bi2moo6 For Efficient Degradation of Metronidazole

Abstract

The Zn3In2S6/Bi2MoO6 S-scheme heterojunction photocatalyst with excellent redox ability was prepared. Zn3In2S6 and Bi2MoO6 were compounded by hydrothermal reaction, and Zn3In2S6/Bi2MoO6 heterojunctions were successfully prepared. Among them, the reaction rate constant of Zn3In2S6/Bi2MoO6-10% (ZBM-10) with the best performance in the process of degrading metronidazole under the most suitable conditions is 0.0463 min−1, which was 2.17 times higher than that of single Zn3In2S6. At the same time, the experiment also proves that the heterojunction material has high stability. This study can provide a strong basis for the degradation of pollutants by S-scheme heterojunctions.

Keywords: Heterojunction, Metronidazole, Photogenerated carrier separation.