Investigating the Antibacterial Features of Ag-doped ZnS Nanoparticles: A Facile Chemical Co-Precipitation Approach

Nanomaterials, characterized by a high surface-to-volume ratio, offer promising opportunities for enhancing antibacterial properties due to their unique properties. In this study, ZnS: Ag nanoparticles were synthesized using coprecipitation method to investigate their potential as antibacterial agents. The synthesized nanoparticles were comprehensively characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM) to understand their structural, chemical and morphological properties. XRD analysis confirmed the formation of hexagonal ZnS: Ag nanoparticles with high crystalline quality with an average crystal size ranging from ۳۰ to ۴۰ nm, while FTIR spectrum was used to analyze the functional groups and chemical bonds in ZnS: Ag nanoparticles and confirm the synthesis of ZnS: Ag. FESEM images depict well-defined polyhedral nanoparticles. In addition, the antibacterial test was performed on Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria using the colony counting method. Bioactivity tests of Ag-doped ZnS nanoparticles against both Staphylococcus aureus and Escherichia coli showed a significant reduction in the number of bacterial colonies after exposure to ZnS: Ag nanoparticles. The improved biological properties of Ag-doped ZnS make it a promising candidate for use as an antibacterial agent.

کلیدواژه ها:

Nanomaterials ، Co-Precipitation ، Zinc Sulfide ، Silver dopant ، Antibacterial activity