Antibacterial Activity of Nanosilver Ions and Particles
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Abstract
The antibacterial activity of nanosilver against Gram negative Escherichia coli bacteria is investigated by immobilizing nanosilver on nanostructured silica particles and closely controlling Ag content and size. These Ag/SiO(2) nanoparticles were characterized by S/TEM, EDX spectroscopy, X-ray diffraction the exposed Ag surface area was measured qualitatively by O(2) chemisorption. Furthermore, the fraction of dissolved nanosilver was determined by measuring the released (leached) Ag(+) ion concentration in aqueous suspensions of such Ag/SiO(2) particles. The antibacterial effect of Ag(+) ions was distinguished from that of nanosilver particles by monitoring the growth of E. coli populations in the presence…
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2Topics & keywords
Topics
Keywords
- Antibacterial activity
- Ion
- Aqueous solution
- Nanoparticle
- Nuclear chemistry
- Chemistry
- Chemisorption
- Inorganic chemistry
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