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Abstract

BIOSYNTHESIS AND CHARECTERIZATION OF GOLD NANOPARTICLES USING AQUEOUS LEAF EXTRACT OF CAJANUS CAJAN

Vidhya Ananthi* and Ahmed John

ABSTRACT

Nanotechnology is now creating a growing sense of excitement in the life sciences especially biomedical devices and Biotechnology. Nanoparticles are a special group of materials with unique features and extensive applications in diverse fields. The present study focused on the bio synthesis and characterization of Gold Nanoparticles using aqueous leaf extract of Cajanus cajan. A quantity of 10 ml plant extract was mixed with 90 ml of 10-3 M gold chloride for the synthesis of gold nanoparticles. The optical property of AuNPs was determined by UVVis spectrophotometer (Perkin-Elmer, Lamda 35, Germany). The morphological features of synthesized gold nanoparticles from Cajanus cajan plant extract were studied by Scanning Electron Microscope (JSM-6480 LV). The phase evolution of calcined powder as well as that of sintered samples was studied by X - ray diffraction technique (Philips PAN analyticl, The Netherlands) using Cu radiation. The chemical composition of the synthesized Gold nanoparticles was studied by using FTIR spectrometer (perkin-Elmer LS-55- Luminescence spectrometer). Dynamic light scattering (DLS) which is based on the laser diffraction method with multiple scattering techniques was employed to study the average particle size of gold nanoparticles. The particles distribution in liquid was studied in a computer controlled particle size analyzer (ZETA sizer Nanoseries, Malvern instrument Nano Zs) to find out the particle size distribution.

Keywords: Cajanus cajan, biosynthesis, Gold Nanoparticles, Nanotechnology.


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