Anti-fungal activity of SiO2/Ag2S nanocomposites against Aspergillus niger
authors Fateixa, S; Neves, MC; Almeida, A; Oliveira, J; Trindade, T
nationality International
journal COLLOIDS AND SURFACES B-BIOINTERFACES
author keywords Silver sulfide; Anti-fungal activity; Nanoparticles; Silica
keywords SINGLE-MOLECULE PRECURSORS; SILVER ION RELEASE; ESCHERICHIA-COLI; SILICA SPHERES; NANOPARTICLES; GROWTH; NANOCRYSTALLITES; FILMS
abstract Submicron particles of amorphous SiO2 have been used to grow Ag2S nanophases at their surfaces. SEM and TEM analysis showed morphological well-defined nanocomposite particles consisting of Ag2S nanocrystals dispersed over the silica surfaces. These SiO2/Ag2S nanocomposites were investigated as anti-fungal agents against Aspergillus niger in different experimental conditions, including as nanofillers in cellulosic fibres. The anti-fungal activity in these composite systems is suggested to result from a synergistic effect due to Ag2S anti-fungal centres and the SiO2 surfaces in promoting the adsorption of the fungus. (c) 2009 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0927-7765
year published 2009
volume 74
issue 1
beginning page 304
ending page 308
digital object identifier (doi) 10.1016/j.colsurfb.2009.07.037
web of science category Biophysics; Chemistry, Physical; Materials Science, Biomaterials
subject category Biophysics; Chemistry; Materials Science
unique article identifier WOS:000271371300045
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journal impact factor 3.997
5 year journal impact factor 4.294
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