Antibacterial activity of monolayer nanoparticulate AgN-(titanium-oxo-alkoxy) coatings

• Published in: Mechanics & industry : an international journal on mechanical sciences and engineering applications Vol. 17; no. 5
• Main Authors: Jia, Zixian, Nadtochenko, Viktor, Radzig, Marina A., Khmel, Inessa A., Zavilgelsky, Gennadii, Azouani, Rabah, Mielcarek, Christine, Ben Amar, Mounir, Traore, Mamadou, Kanaev, Andrei
• Format: Journal Article
• Language: English
• Published: Villeurbanne EDP Sciences 2016
• Subjects: Ag-TiO2; antibacterial activity; Aqueous solutions; Bacteria; Coating effects; E coli; Glass substrates; Monolayers; Morphology; nanocoatings; Nanoparticles; Silver; Titanium
• ISSN: 2257-7777; 2257-7750
• DOI: 10.1051/meca/2015108

A comparative evaluation of the antibacterial effect of silver in the form of nanoparticles and Ag+ ions was performed. Silver nanoparticulate coatings of stable and reproducible morphology were prepared on monolayer size-selected titanium-oxo-alkoxy nanoparticles deposited on glass substrates. The coatings exhibit a strong antibacterial activity towards Escherichia coli K12 AB 1157 and suppress biofilms formation. This activity is mainly related to the Ag+ ions release into aqueous solutions in dark. The deposited silver mass ~1 μg.cm-2 is smaller compared to that of Ag+ ions and nanoparticles generally reported for inhibiting Escherichia coli. The synergetic effect of the deposited nanoparticles and Ag+ ions can be suggested.