Magnetic Nanoparticle-Incorporated Molybdenum Disulfide Nanocomposites for Enhanced Antimicrobial Applications
摘要
Nanomaterials as antimicrobial agents are a highly promising and auspicious way to address the challenges where traditional antimicrobial agents are ineffective. Recently, studies have revealed that, due to a large surface area, low cytotoxicity, and excellent biocompatibility, molybdenum disulfide (MoS2) has been extensively studied for antimicrobial studies. However, engineering the nano-architectures and/or composites to enhance the antimicrobial activity is desirable to benefit their practical applications. In this context, here we demonstrate an approach based on the hybridization of MoS2 with Fe3O4, where the MoS2-Fe3O4 nanocomposite exhibits superior antimicrobial activity compared to MoS2. Both were synthesized using a simple, economically viable hydrothermal method and examined for their structure, chemical bonding, surface morphology, and antimicrobial activity. The antimicrobial studies were performed using the agar diffusion method against the Escherichia coli (E. coli) and the Saccharomyces cerevisiae (S. cerevisiae). The inhibition zones measured as a result of antimicrobial activity using MoS2 and MoS2-Fe3O4 against E. coli were 18 and 23 mm, while those of S. cerevisiae were 11 and 22 mm, respectively. These results demonstrate that hybridizing MoS2 (flower-like) with Fe3O4 (rod-like) can increase the antimicrobial properties to a large extent. This research suggests that the MoS2-Fe3O4 nanocomposite holds promise as an advanced antimicrobial agent.