Bactericide properties of gold and silver nanoparticles in solution and on high disperse silica surface
Анотація
Bactericide activities of photochemically generated nanosized nanoparticles of gold and silver have been studied as well as those of their binary compositions with average size of 20 to 30 nm stabilized with cetyltrimethylammonium bromide against pathogenic microorganisms of E. coli, their optical properties and structure in solutions and on high disperse silica surface. Absorption spectra of gold, silver, and bimetallic nanocomposite particles include bands of surface plasmon resonance. Formation of alloy-type of core-shell nanostructures is supported by microscopy results. An irreversible binding has been found of nanoparticles with silica surface. When in colloids or adsorbed on silica, mono- and bimetallic nanoparticles are bactericidic against pathogenic microorganisms E. coli, Staphylococcus lugduneusis, and Micrococcus halobius.
Посилання
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