Dubey, Shashi Prabha and Lahtinen, Manu and Sillanpää, Mika (2010) Green synthesis and characterizations of silver and gold nanoparticles using leaf extract of Rosa rugosa. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS , 364 . pp. 34-41. ISSN 0927-7757
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Metal nanostructures have unusual physicochemical properties and biological activities compared to their bulk parent materials. Thus in recent years a number of physical, chemical and biological techniques were applied for the development of metal nanoparticles (NP). Here we have synthesized silver and gold nanoparticles (AgNPs and AuNPs) by using leaves extracts of Rosa rugosa. Surface plasmon resonance spectra for silver and gold are obtained at 451 and 578nm with brown yellow and pink-red color, respectively. AgNPs and AuNPs vary in size according to different leaves extract and metal concentration used for the synthesis. Different instrumental techniques were applied to characterize the synthesized AgNPs and AuNPs viz. UV–vis, TEM, XRD, FTIR, Zetasizer and EDX. The synthesized NPs were mostly spherical (in case of AgNPs) with some triangular and hexagonal (especially in case of AuNPs) in shapes with an average size of 12 and 11nm for AgNPs and AuNPs, respectively.
|Subjects:||Material Science > Bio materials|
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Deposited By:||Prof. Mika Sillanpää|
|Deposited On:||18 Jan 2012 08:33|
|Last Modified:||18 Jan 2012 08:33|
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