RESEARCH ON THE FABRICATION OF ZnO-Ag/ALGINATE NANOCOMPOSITE AS ANTIBACTERIAL MATERIAL

Abstract

In this study, ZnO-Ag nanoparticles were successfully synthesized via the co-precipitation method, forming a stable wurtzite structure with uniform hexagonal particles of approximately 20–25 nm. Based on these nanoparticles, ZnO-Ag/alginate nanocomposites were synthesized at different ratios, in which spectroscopic analyses confirmed that the obtained materials retained the characteristic properties of both ZnO-Ag and alginate. In particular, the materials exhibited strong antibacterial activity against E. coli and S. aureus, with inhibition zone diameters reaching the best values of 26 and 30 mm, respectively, within the studied range. These results demonstrate that ZnO-Ag/alginate materials not only possess biocompatibility but also provide outstanding antibacterial capability, opening up prospects for their application in the treatment and disinfection of contaminated water