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Calendula officinalis-mediated biosynthesis of Silver Nanoparticles and their Electrochemical and Optical Characterization
Kafrelsheikh Univ, Div Photo & Nanochem, Dept Chem, Fac Sci, Kafr Al Sheikh 33516, Egypt..
Menoufia Univ, Dept Chem, Fac Sci, Shibin Al Kawm 32512, Egypt..
King Saud Univ, Dept Pharmacognosy, Coll Pharm, POB 2457, Riyadh 11451, Saudi Arabia..
Karolinska Univ Hosp, Dept Expt Hematol, SE-14186 Stockholm, Sweden.;Stockholm Univ, Dept Mol Biosci, Wenner Gren Inst, SE-10691 Stockholm, Sweden..
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2016 (English)In: International Journal of Electrochemical Science, ISSN 1452-3981, E-ISSN 1452-3981, Vol. 11, no 12, p. 10795-10805Article in journal (Refereed) Published
Abstract [en]

The metal nanoparticles synthesis is highly explored field of nanotechnology. The biological methods seem to be more effective. A simple and elegant method is adopted to prepare Silver nanoparticles (AgNPs) in a single step using Calendula officinalis extract (COE) as reducing and stabilizing agent. The plant extract is mixed with AgNO3 to get biosynthesized AgNPs. The biosynthesized AgNPs were both optically and electrochemically characterized by UV-Vis, Infrared spectroscopy, Transmission Electron Microscopy, Fluorescence spectroscopy, Zeta potential and Cyclic Voltammetry. The results showed Calendula officinalis extract is a useful bioreductant for the synthesis of AgNPs. This study infers that the size of biosynthesized AgNPs ranges from 30 to 50 nm. The surface plasmon resonance peak in the UV-Vis absorption spectra shows maximum absorption at 435 nm. Fluorescence spectra of silver nanoparticles, which show an emission peak at 468 nm have also been studied. Zeta potential analysis ensured the biosynthesized AgNPs are highly stable. Using this environmentally friendly method of biological AgNPs production supplies rates of biosynthesis facile in comparison with other chemical and engineered routes. The employment of traditional medicine in biosynthesis protocols can potentially open new doors in various human health and well-being implications such as cosmetics, foods and medicine.

Place, publisher, year, edition, pages
2016. Vol. 11, no 12, p. 10795-10805
Keyword [en]
silver nanoparticles (AgNPs), biosynthesis, Calendula officinalis extract
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-315085DOI: 10.20964/2016.12.88ISI: 000391039000079OAI: oai:DiVA.org:uu-315085DiVA, id: diva2:1073229
Available from: 2017-02-09 Created: 2017-02-09 Last updated: 2017-11-29Bibliographically approved

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