Preparation and antibacterial activity of silver nanoparticles-decorated graphene composites
- Preparation and antibacterial activity of silver nanoparticles-decorated graphene composites
- 심재진; 김병극; 조윤래; 웬방호아
- SUPERCRITICAL CARBON-DIOXIDE; ANTIMICROBIAL EFFICACY; OXIDE; NANOCOMPOSITES; NANOTUBES; DELIVERY
- Issue Date
- ELSEVIER SCIENCE BV
- JOURNAL OF SUPERCRITICAL FLUIDS, v.72, pp.28 - 35
- Composites of graphene decorated with silver nanoparticles were simply and efficiently synthesized using supercritical CO2. The nanoparticles were formed on graphene sheets through a simple hydrogen reduction of (1,5-Cyclooctadiene)(hexafluoroacetylacetonato) silver(I) precursor in supercritical CO2. The product was characterized by scanning electron microscopy, transmission electron microscopy, atomic force microscopy, FTIR spectroscopy, X-ray diffraction, UV-visible spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Highly dispersed nanoparticles of varying size and shape were well adhered to graphene sheets. The composites showed high antibacterial activities against two Gram-negative bacteria Escherichia coli and Listonella anguillarum and two Gram-positive bacteria Bacillus cereus and Staphylococcus aureus. (c) 2012 Elsevier B.V. All rights reserved.
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