Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5348304 | Applied Surface Science | 2015 | 5 Pages |
Abstract
Sol-gel based silica nanoparticles of 100Â nm were used to interact with copper ions from the dissolution of CuCl2 allowing the synthesis of paratacamite (Cu2(OH)3Cl) nanocrystals of around 20Â nm. The method produced well dispersed copper nanostructures directly supported on the surface of the SiO2 particles and was generalized by using a natural zeolite microparticle as support with similar results. These hybrid Cu based nanoparticles released copper ions when immersed in water explaining their antimicrobial behavior against Escherichia coli and Staphylococcus aureus as measured by the minimum inhibitory and minimum bactericidal concentrations (MIC and MBC). Noteworthy, when these nanostructured particles were mixed with an organic coating the resulting film eliminated until a 99% of both bacteria at concentrations as low as 0.01Â wt%.
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Authors
Humberto Palza, Katherine Delgado, Nicolás Curotto,