Please use this identifier to cite or link to this item: http://hdl.handle.net/11452/22502
Title: Biosynthesis of silver nanoparticles using leaves of Stevia rebaudiana
Authors: Yılmaz, Mükremin
Kılıç, M. Akif
Bayram, Edip
Çiçek, Ahmet
Mete, Ahmet
Uluǧ, Bülent
Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.
Türkdemir, Haluk
6505887226
Keywords: Silver nanoparticles
Stevia rebaudiana
Fourier transform infrared spectroscopy
Nuclear magnetic resonance
Leaf-assisted biosynthesis
Green synthesis
Gold nanoparticles
Extracellular biosynthesis
Metal nanoparticles
Extract
Actinomycete
Plant
AU
Aldehydes
Biochemistry
Carboxylic acids
Fourier transform infrared spectroscopy
Ketones
Nanomagnetics
Nanoparticles
Nuclear magnetic resonance spectroscopy
Organic compounds
Polydispersity
Resonance
Sugar substitutes
Synthesis (chemical)
Transmission electron microscopy
Ultraviolet spectroscopy
Ultraviolet visible spectroscopy
X ray diffraction
Capping reagents
Chemical compositions
Dominant mechanism
Leaf extracts
Proton nuclear magnetic resonance
Ultraviolet-visible spectra
Silver
Issue Date: 11-Nov-2011
Publisher: Elsevier Science
Citation: Yilmaz, M. vd. (2011). “Biosynthesis of silver nanoparticles using leaves of Stevia rebaudiana”. Materials Chemistry and Physics, 130(3), 1195-1202.
Abstract: The synthesis of silver nanoparticles employing a shadow-dried Stevia rebaudiana leaf extract in AgNO3 solution is reported. Transmission electron microscopy and X-ray diffraction inspections indicate that nanoparticles are spherical and polydispersed with diameters ranging between 2 and 50 nm with a maximum at 15 nm. Ultraviolet-visible spectra recorded against the reaction time confirms the reduction of silver nanoparticles indicating that the formation and the aggregation of nanoparticles take place shortly after the mixing, as they persist concurrently with characteristic times of 48.5 min and 454.5 min, respectively. Aggregation is found to be the dominant mechanism after the first 73 min. Proton nuclear magnetic resonance spectrum of the silver nanoparticles reveals the existence of aliphatic, alcoholic and olefinic CH2 and CH3 groups, as well as some aromatic compounds but no sign of aldehydes or carboxylic acids. Infrared absorption of the silver nanoparticles suggests that the capping reagents of silver and gold nanoparticles reduced in plant extracts/broths are of the same chemical composition of different ratios. Ketones are shown to play a somehow active role for the formation of nanoparticles in plant extracts/broths.
URI: https://doi.org/10.1016/j.matchemphys.2011.08.068
http://hdl.handle.net/11452/22502
ISSN: 0254-0584
1879-3312
Appears in Collections:Scopus
Web of Science

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