Preparation and Characterization of Bi2Mo6 (M = Mo, W) for Antibacterial Activity

Abstract

In recent years, Bi-based photocatalysts have begun to be applied in biological applications. However, the antibacterial ability of a Bi-based photocatalyst is still unclear. In this study, Bi2MoO6 and Bi2WO6 were successfully synthesized by a hydrothermal approach. The fabricated samples were characterized by X-Ray diffraction, FESEM, and UV-Vis spectra. Besides, the antibacterial activity of both photocatalyst samples toward E. coli as negative and S. aureus as positive pathogens were studied. Compared with antibacterial of Bi2WO6, the resultant Bi2MoO6 exhibited high susceptible S. aureus bacterial strain revealing large zones of 24 mm to 29 mm, while Bi2WO6 exhibited less susceptible of 17.5 mm to 21.5 mm as compared with the zone of inhibition against tested bacterial E. coli. Besides, a possible mechanism suggested the effect of nanosheet structure of samples to penetrate the cell membrane which results in leakage of interior cell and complete death and these results will provide some support for the applications of Bi2MoO6 and Bi2WO6 in antibacterial materials under common environments.

Keywords

• bi-based photocatalysts
• hydrothermal approach
• nanosheets structure
• growth inhibition zone