Silver-Decorated 2D Nanomaterials for Rapid and Broad-Spectrum Antibacterial Applications

Nanomaterials based on silver have become the focus of attention because of their excellent bactericidal effects and low chance of resistance occurring. Two-dimensional (2D) nanomaterials with silver decoration were prepared in this study and evaluated based on their speedy and universal antibacterial activity. X-ray diffraction (XRD), Fourier-transform infrared spectrophotometry (FTIR), and UV-Visible spectra were used to perform structural and physicochemical characterization of the silver nanoparticles to verify the success of the formation and stabilization of the material on the 2D substrate. The XRD pattern indicated that the crystal structure of metallic silver was face-centered cubic crystal and the FTIR analysis indicated that functional groups that anchored the nanoparticles were present. The spectroscopy UV Vis observed a typical surface plasmon resonance peak at 420 nm, which reflected that the silver nanoparticles were well dispersed. The discovery of nanocomposite synthesized was tested against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus by disc diffusion. The findings showed that they have a potent concentration-related antibacterial effect, and the silver-decorated 2D nanomaterials were the promising candidates to the development of the advanced antimicrobial applications.