Decoration of Ag2WO4 on plate-like MnS for mitigating the charge recombination and tuned bandgap for enhanced white light photocatalysis and antibacterial applications

In this study, the novel MnS/Ag photocatalyst was synthesized via chemical co-precipitation method and investigated its physical and structural characteristics using HR-TEM, N-2 adsorption and desorption studies, FT-IR, EDAX, PL, UV-vis DRS, ESR, XPS and XRD. The estimation of photocatalytic activity of synthesized photocatalysts was done using methylene blue (organic dye) in aqueous solution. The photocatalyst efficiency was superior for MnS/Ag with degradation of 92.3% when compared with bare MnS (67.23%) and Ag (58.93%). The kinetic study reveals that higher reaction kinetic rate achieved by the MnS/Agcompared with MnS and Ag. The scavenging test reveals that center dot OH and O center dot took the important part in the degradation process. The six cycles test reveals that the photocatalyst is highly reusable by showing similar degradation efficiency throughout the six cycles. MnS/Ag was also possessed potential broad spectrum anti-microbial activity against B. subtilis and E. coli. Hence, MnS/Agheterostructure can be used as an excellent photocatalyst as well as an effective anti-microbial agent. MnS/Agwould be a cost-effective, highly efficient photocatalyst and a good antimicrobial agent. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The novel MnS/Ag photocatalyst showed superior photocatalytic efficiency and broad spectrum antimicrobial activity. It also exhibited high reusability with consistent degradation efficiency over six cycles of use. MnS/Ag has the potential to be a cost-effective, highly efficient photocatalyst and a good antimicrobial agent.