Autor/a:
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Alonso González, Amanda; Muñoz Berbel, Xavier; Vigués, Núria; Macanás de Benito, Jorge; Muñoz Tapia, Maria; Mas i Gordi, Jordi; Muraviev, Dmitri N.
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Abstract:
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This manuscript describes the synthesis (based on the intermatrix
synthesis (IMS) method), optimization, and application to bacterial
disinfection of Ag@Co polymer metal nanocomposite materials with magnetic
and bactericidal properties. This material showed ideal bactericide
features for being applied to bacterial disinfection of water, particularly (1)
an enhanced bactericidal activity (when compared with other nanocomposites
only containing Ag or Co nanoparticles), with a cell viability close to 0% for
bacterial suspensions with an initial concentration below 105 colony forming
units per milliliter (CFU/mL) after a single pass through the material, (2)
capacity of killing a wide range of bacterial types (from coliforms to Grampositive
bacteria), and (3) a long performance-time, with an efficiency of
100% (0% viability) up to 1 h of operation and higher than 90% during the first
24 h of continuous operation. The nanocomposite also showed a good
performance when applied to water samples from natural sources with more complex matrices with efficiencies always higher
than 80%. |