Antimicrobial Activity of Colloidal Silver Nanoparticles Prepared by Sol-Gel Method
In this clinical study, published in the Digest Journal of Nanomaterials and Biostructures, researchers from the Metallurgical and Material Science Engineering Department at Dokuz Eylul University in Turkey documented that colloidal silver nanoparticles in very low concentrations (i.e., 2-4 ppm) and at particle sizes of approximately 20-45 nm demonstrated a pronounced antibacterial effect against Escherichia coli, Staphylococcus aureus, Candida albicans, Bacillus subtilis, Salmonella typhimurium, Pseudomonas aeruginosa and Klebsiella pneumoniae.