Work

The work solved the important problem of long-term stabilization of nanoscale silver, which does not oxidize in solution and on the surface of silica. Thr binary stabilizer of nanoparticles of polyvinylpyrrolidone/sodium dodecyl sulphate was developed, which provides the preservation of nano-size and characteristics spectra of surface plasmon resonance of the metal for two years or more. The dependence of the size of the silver nanoparticles on the amount of reducing agent was determined. Colloidal solutions of silver nanoparticles and Ag/SiO2 composites showed a high antimicrobial activity against a number of pathogenic microorganisms – S. aureus, E. coli, P. aeruginosa, C. albicans, and maintained their antimicrobial action for two years, which allows us to recommend them for use as antimicrobial agents. Scientific results are reflected in the five articles. Novelty and competitiveness of technical solutions are confirmed by two patents of Ukraine.