Biosynthesis of Au nanoparticles using olive leaf extract: 1st Nano Updates
By M. Khalil, E. H. Ismail, Fatma El-Magdoub. 2012
296 citations recorded by the source corpus.
Abstract The biological synthesis of gold nanoparticles (AuNPs) of various shapes (triangle, hexagonal, and spherical) using hot water olive leaf extracts as reducing agent is reported. The size and the shape of Au nanoparticles are modulated by varying the ratio of metal salt and extract in the reaction medium. Only 20 min were required for the conversion into gold nanoparticles at room temperature, suggesting a reaction rate higher or comparable to those of nanoparticles synthesis by chemical methods. The variation of the pH of the reaction medium gives AuNPs nanoparticles of different shapes. The nanoparticles obtained are characterized by UV–Vis spectroscopy, photoluminescence, transmission electron microscopy (TEM), X-ray diffraction (XRD), FTIR spectroscopy and thermogravimetric analysis. The TEM images showed that a mixture of shapes (triangular, hexagonal and spherical) structures was formed at lower leaf broth concentration and high pH, while smaller spherical shapes were obtained at higher leaf broth concentration and low pH.
Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/bc14a5e4c9468580243e21314c42f795ce69317d
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In Biomedical Engineering
In Electronic, Optical and Magnetic Materials
In Materials Chemistry
Citations in the corpus
- Green synthesis of silver nanoparticles using olive leaf extract and its antibacterial activity (2014, background): “3395 cm 1 and 1420 to 1454 cm 1, implying the binding of silver ions with hydroxyl and carboxylate groups of the extract (Khalil et al., 2012).”
- Biogenic synthesis of nanoparticles: A review (2015, unknown): “Regarding the morphology control, triangular, hexagonal and spherical shaped Au NPs were prepared using hot water, olive leaf extract at a high reaction temperature as compared to NPs synthesized via chemical methods (Khalil et al., 2012).”
- Emerging Technologies for Recovery of Value-Added Components from Olive Leaves and Their Applications in Food/Feed Industries (2017, methodology): “Recently, Khalil et al. (2012) formulated AgNPs using hot water OLE and confirmed broad-spectrum antibacterial activity at low concentrations.”