Synergistic effect of Bi-doped exfoliated MoS₂ nanosheets on their bactericidal and dye degradation potential.

In this study, bare and bismuth (Bi)-doped molybdenum disulfide (MoS2) nanosheets were synthesized via a hydrothermal method. Different Bi weight ratios of 2.5, 5, 7.5 and 10% were doped in MoS2 to evaluate its catalytic and antimicrobial activities. Doped nanosheets were
characterized using XRD, FTIR and UV-vis spectroscopy, FESEM, HRTEM, Raman, PL, DSC/TGA, EDX, XRF and XPS analysis. The XRD spectra confirmed that the doped nanosheets exhibit a hexagonal structure. The morphology and interlayer d-spacing of doped MoS2 were determined by FESEM and HRTEM. The doped Bi nanosheets exhibited higher antimicrobial activity against Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli). In conclusion, the Bi-doped MoS2 nanocomposite has exhibited significant potential for use in industrial applications. Its antibacterial properties can also mitigate health risks associated with the presence of several well-known pathogens in the environment

Reference: Qumar, U., Ikram, M., Imran, M., Haider, A., Ul-Hamid, A., Haider, J., Riaz, K.N. and Ali, S., 2020. Synergistic effect of Bi-doped exfoliated MoS 2 nanosheets on their bactericidal and dye degradation potential. Dalton Transactions, 49(16), pp.5362-5377.