Influence of Preparation Procedure on Physicochemical and Antibacterial Properties of Titanate Nanotubes Modified with Silver

Silver nanoparticles (NPs) are effective antibacterial agents; however, aggregation of NPs and uncontrolled release of Ag affect their efficiency and may pose a risk to the environment. To overcome these disadvantages, immobilization of Ag onto titanate nanotubes (TNTs) was investigated. This paper...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2019-05, Vol.9 (5), p.795
Main Authors: Jose, Manu, Sienkiewicz, Paulina, Szymańska, Karolina, Darowna, Dominika, Moszyński, Dariusz, Lendzion-Bieluń, Zofia, Szymański, Kacper, Mozia, Sylwia
Format: Article
Language:English
Subjects:
antibacterial
Antibacterial activity
Antibacterial agents
Bacteria
Cytotoxicity
E coli
Electroless deposition
Electroless plating
Escherichia coli
Immobilization
Inert atmospheres
Microorganisms
Nanocomposites
Nanomaterials
Nanoparticles
Nanotechnology
Nanotubes
Photocatalysis
Properties (attributes)
Silver
Silver chloride
Sol-gel processes
Staphylococcus epidermidis
Tin dioxide
titanate nanotubes
TNT
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Summary:Silver nanoparticles (NPs) are effective antibacterial agents; however, aggregation of NPs and uncontrolled release of Ag affect their efficiency and may pose a risk to the environment. To overcome these disadvantages, immobilization of Ag onto titanate nanotubes (TNTs) was investigated. This paper describes the physicochemical and antibacterial properties of silver incorporated titanate nanotubes (Ag/TNTs) prepared using five procedures and containing different Ag amounts (0.11-30.85 wt.%). The methods were (i) sol-gel followed by a hydrothermal process; (ii) photodeposition under ambient conditions; (iii) photodeposition under an inert atmosphere; (iv) NaBH reduction; and (v) electroless deposition after activation of TNTs with Sn . Depending on the synthesis procedure, the presence of metallic Ag NPs, AgO or AgCl was observed. The electroless method led to an additional deposition of SnO NPs. The antibacterial properties of Ag/TNTs were analyzed as a function of Ag content and released against and . The best bactericidal properties exhibited Ag/TNTs prepared through the photodeposition process due to the higher interaction of exposed Ag NPs with bacteria. An increase of Ag loading resulted in improvement of antibacterial activity of Ag/TNTs although no direct correlation between silver content or release and inhibition of bacterial growth was found.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano9050795