Novel method for synthesis of silver nanoparticles and their application on wool
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AuthorsBoroumand, Majid Nasiri
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In this study, a new method for the synthesis of silver nanoparticles (AgNPs) suitable to impart antibacterial properties of wool fabric is proposed. AgNPs were synthesized by a biochemical reduction method. An aqueous solution of extracted dye from Pomegranate peel was used as a reducing agent for the synthesis of AgNPs from silver nitrate. The ratio of dye to silver nitrate concentration (R-Dye/Ag = [Dye]I[AgNO3]) is the influencing factor in the synthesis of silver nanoparticles. The nanoparticles formation was followed by UV/Vis absorption spectroscopy. The size and shape of AgNPs were studied by transmission electron microscopy (TEM). The size distribution and Zetapotential of nanoparticles were evaluated using diffraction light scattering (DLS) measurements. The antibacterial potential of biosynthesized silver nanoparticles against Escherichia coli (E. coli) was examined qualitatively and quantitatively. Kinetic analysis of the bacteria reduction using AgNPs synthesized in differ...ent way was performed. AgNPs were applied on wool fabrics by exhaustion. The changes in surface morphology of wool fibers after AgNPs loading were studied using scanning electron microscopy (SEM). The amounts of silver deposited on wool fabrics at different pH and temperature were compared applying energy-dispersive X-ray spectroscopy (EDX). AgNPs loaded fabrics showed excellent antibacterial efficiency even after five washing cycles. To investigate the nature of interaction and bonding between the AgNPs and the wool substrate XPS measurements were performed. (C) 2015 Elsevier B.V. All rights reserved.
Keywords:Natural dye / Silver nanoparticle / Antibacterial / Pomegranate / Wool
Source:Applied Surface Science, 2015, 346, 477-483
- European network action COST Action Smart and Green Interfaces - from Single Bubbles and Drops to Industrial, Environmental and Biomedical Applications [MP1106], COST Action Colloidal Aspects of Nanoscience for Innovative Processes and Materials [CM1101]