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Closed Access item Biocideactivity of diatom-silvernanocomposite

Authors:Suárez Menéndez, Marta
Esteban-Tejeda, L.
Malpartida Romero, Francisco
Fernández Valdés, Adolfo
Torrecillas, Ramón
Moya, J. S.
Keywords:Composite materials, Doping, Silica, Silver, Nanoparticles, Antimicrobial
Issue Date:Oct-2010
Publisher:Elsevier
Citation:Materials Letters 64(19): 2122-2125 (2010)
Abstract:Diatom-nAg composites containing 1 wt.% of metallic silver nanoparticles (≤ 20 nm) have been obtained by a colloidal route and chemical reduction. This nanostructured powder has proved to be a selective green inorganic biocide which reduces the starting concentrations of Escherichia coli and Micrococcus luteus cultures by at least 5 orders of magnitude, while completely inactive against yeast. Diatom-nAg can be considered as a selective inorganic biocide particularly suitable for the food and pharmacological sectors. The silver nanoparticles are released from the diatom surface to the liquid media in a controlled manner, reaching a concentration (< 11 ppm) far below the toxicity limit for human cells.
Description:4 páginas, 4 figuras, 1 tabla.
Publisher version (URL):http://dx.doi.org/10.1016/j.matlet.2010.06.061
URI:http://hdl.handle.net/10261/48208
ISSN:0167-577X
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Appears in Collections:(ICMM) Artículos
(CINN) Artículos
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