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Issue 72, 2020
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Antibacterial activity of AgNPs–TiO2 nanotubes: influence of different nanoparticle stabilizers

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Abstract

Enhanced antibacterial properties of nanomaterials such as TiO2 nanotubes (TNTs) and silver nanoparticles (AgNPs) have attracted much attention in biomedicine and industry. The antibacterial properties of nanoparticles depend, among others, on the functionalization layer of the nanoparticles. However, the more complex information about the influence of different functionalization layers on antibacterial properties of nanoparticle decorated surfaces is still missing. Here we show the array of ∼50 nm diameter TNTs decorated with ∼50 nm AgNPs having different functionalization layers such as polyvinylpyrrolidone, branched polyethyleneimine, citrate, lipoic acid, and polyethylene glycol. To assess the antibacterial properties, the viability of Gram-positive (Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) has been assessed. Our results showed that the functional layer of nanoparticles plays an important role in antibacterial properties and the synergistic effect such nanoparticles and TiO2 nanotubes have had different effects on adhesion and viability of G and G+ bacteria. These findings could help researchers to optimally design any surfaces to be used as an antibacterial including the implantable titanium biomaterials.

Graphical abstract: Antibacterial activity of AgNPs–TiO2 nanotubes: influence of different nanoparticle stabilizers

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Article information


Submitted
25 Aug 2020
Accepted
01 Dec 2020
First published
17 Dec 2020

This article is Open Access

RSC Adv., 2020,10, 44601-44610
Article type
Paper

Antibacterial activity of AgNPs–TiO2 nanotubes: influence of different nanoparticle stabilizers

O. Bilek, T. Fialova, A. Otahal, V. Adam, K. Smerkova and Z. Fohlerova, RSC Adv., 2020, 10, 44601
DOI: 10.1039/D0RA07305A

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    [Original citation] - Published by The Royal Society of Chemistry.

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