Abstract
Submicron particles of amorphous SiO 2 have been used to grow Ag 2S nanophases at their surfaces. SEM and TEM analysis showed morphological well-defined nanocomposite particles consisting of Ag 2S nanocrystals dispersed over the silica surfaces. These SiO 2/Ag 2S 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 Ag 2S anti-fungal centres and the SiO 2 surfaces in promoting the adsorption of the fungus.
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