Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 353, Issue 1, Pages 69-76Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2009.10.023
Keywords
Micellar; Nanoparticles; Sucrose ester; Silver
Categories
Funding
- Universiti Kebangsaan Malaysia [UKM-OUP-NBT-27-138/2008]
- MOSTI for the NSF scholarship
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Ag nanoparticles with diameter in the range of 10-25 nm had been synthesized using a simple sucrose ester micellar-mediated method. Ag nanoparticles were formed by adding AgNO3 Solution into the Sucrose ester micellar Solution containing sodium hydroxide at atmospheric condition after 24 h of aging time. Trace amount of dimethyl formamide (DMF) in the Sucrose ester solution served as a reducing agent while NaOH acted as a catalyst. The produced Ag nanoparticles were highly stable in the sucrose ester micellar system as there was no precipitation after 6 months of storage. The as-synthesized Ag nanoparticles were characterized using transmission electron microscope (TEM), X-ray diffractometer (XRD), dynamic light scattering (DLS) and UV-vis spectroscopy (UV-vis). Formation mechanism of Ag nanoparticles in the micellar-mediated synthesis is postulated. The antibacterial properties of the Ag nanoparticles were tested against Methicillin-resistant Staphylococcus aureus (MRSA) (Gram-positive) and Aeromonas hydrophila (Gram-negative) bacteria. This work provides a simple and green method for the synthesis of highly stable Ag nanoparticles in aqueous solution with promising antibacterial property. (C) 2009 Elsevier B.V. All rights reserved.
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