Abstract
The paper presents a study concerning the preparation and characterization of a new type of composite powders as silver
nanoparticles deposited on ZnO microcrystalline particles. This system is destined to antifungal applications. The
preparation procedure is based on the reduction of the Ag+ from an AgNO3 solution containing the fine dispersed ZnO
particles. The method allows the achievement of spherical silver nanoparticles having an average diameter of 16.5…88.5
nm. The silver nanoparticles weight content varied between 0.1…25 wt. %. AAS, UV-Vis spectroscopy, dynamic light
scattering technique, TEM and SEM analyses were carried out for chemical and morphological characterisations. The
antifungal assay by the antibiograme method has demonstrated that these composite powders are suitable for health care
and consumer goods items.
Keywords
Composite powders, Silver nanoparticles, Antifungal, TEM, SEM.
Citation
S. GAVRILIU, M. LUNGU, F. GRIGORE, N. BURUNTIA, C. GROZA, New composite powders with high antifungal properties, Optoelectronics and Advanced Materials - Rapid Communications, 3, 8, August 2009, pp.795-799 (2009).
Submitted at: May 18, 2009
Accepted at: July 31, 2009