Spontaneous adsorption of silver nanoparticles on Ti/TiO2 surfaces. Antibacterial effect on Pseudomonas aeruginosa

Titanium is a corrosion-resistant and biocompatible material widely used in medical and dental implants. Titanium surfaces, however, are prone to bacterial colonization that could lead to infection, inflammation, and finally to implant failure. Silver nanoparticles (AgNPs) have demonstrated an excel...

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Bibliographic Details
Published in:Journal of colloid and interface science 2010-10, Vol.350 (2), p.402-408
Main Authors: FLORES, C. Y, DIAZ, C, RUBERT, A, BENITEZ, G. A, MORENO, M. S, FERNANDEZ LORENZO DE MELE, M. A, SALVAREZZA, R. C, SCHILARDI, P. L, VERICAT, C
Format: Article
Language:English
Subjects:
Adsorption
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Chemistry
Citric Acid - chemistry
Citric Acid - pharmacology
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Microscopy, Atomic Force
Nanoparticles - chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Pseudomonas aeruginosa - drug effects
Silver - chemistry
Silver - pharmacology
Surface physical chemistry
Surface Properties
Titanium - chemistry
Titanium - pharmacology
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Summary:Titanium is a corrosion-resistant and biocompatible material widely used in medical and dental implants. Titanium surfaces, however, are prone to bacterial colonization that could lead to infection, inflammation, and finally to implant failure. Silver nanoparticles (AgNPs) have demonstrated an excellent performance as biocides, and thus their integration to titanium surfaces is an attractive strategy to decrease the risk of implant failure. In this work a simple and efficient method is described to modify Ti/TiO(2) surfaces with citrate-capped AgNPs. These nanoparticles spontaneously adsorb on Ti/TiO(2), forming nanometer-sized aggregates consisting of individual AgNPs that homogeneously cover the surface. The modified AgNP-Ti/TiO(2) surface exhibits a good resistance to colonization by Pseudomonas aeruginosa, a model system for biofilm formation.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2010.06.052