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Nanocomposites of silver nanoparticles embedded in glass nanofibres obtained by laser spinning

AutorCabal, Belén ; Quintero, Félix; Díaz, Luis A. ; Rojo, Fernando; Dieste, Oliver; Pou, Juan; Torrecillas, Ramón ; Moya, J. S.
Fecha de publicaciónmay-2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónNanoscale 5(9): 3948-3953 (2013)
ResumenNanocomposites made of non-woven glass fibres with diameters ranging from tens of nanometers up to several micrometers, containing silver nanoparticles, were successfully fabricated by the laser spinning technique. Pellets of a soda-lime silicate glass containing silver nanoparticles with varying concentrations (5 and 10 wt%) were used as a precursor. The process followed to obtain the silver nanofibres did not agglomerate significantly the metallic nanoparticles, and the average particle size is still lower than 50 nm. This is the first time that glass nanofibres containing silver nanoparticles have been obtained following a process different from electrospinning of a sol–gel, thus avoiding the limitations of this method and opening a new route to composite nanomaterials. Antibacterial efficiency of the nanosilver glass fibres, tested against one of the most common Gram negative bacteria, was greater than 99.99% compared to the glass fibres free of silver. The silver nanoparticles are well-dispersed not only on the surface but are also embedded into the uniform nanofibres, which leads to a long lasting durable antimicrobial effect. All these novel characteristics will potentially open up a whole new range of applications.
Versión del editorhttp://dx.doi.org/10.1039/C3NR00638G
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