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ECO-FRIENDLY SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM CAESALPINIA CORIARIA (Jacq) Willd
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| Author:
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ANANDHI D, DAISY ANU PRIYA S, REVATHI K
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| Abstract:
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Over the past few decades, nanoparticles of noble metals such as silver exhibited significantly distinct physical,
chemical and biological properties from their bulk counterparts. Nano-size particles of less than 100 nm in diameter
are currently attracting increasing attention for the wide range of new applications in various fields of industry. Such
powders can exhibit properties that is differ substantially from those of bulk materials, as a result of small particle
dimension, high surface area, quantum confinement and other effects. Most of the unique properties of nanoparticles
require not only the particles to be of nano-sized, but also the particles be dispersed without agglomeration. The aim
of the present study is to prepare the ethanloic extract from Caesalpinia coriaria which was used for the synthesis of
silver nanoparticles (AgNPs) from silver nitrate solution. The formation and stability of the reduced silver
nanoparticles in the colloidal solution were monitored by UV–vis spectrophotometer analysis. The sharp bands of
silver nanoparticles were observed around 450 nm. AFM showed the irregular shapes of Ag NPs, and the formation
of silver nanoparticles. The SEM analysis showed that the sizes of the synthesized AgNps ranged from 88 to 124 nm.
SEM determination of the brown color stable samples showed the formation of silver nanoparticles and well
dispersed nanoparticles could be seen in the samples treated with silver nitrate. of the synthesized AgNps ranged
from 88 to 129 nm. FTIR analysis showed the band between 3500-3000 cm-1 corresponds a stretch for C-H bonds,
peak around 1500-1000 cm-1 showed the bond stretch for N-H. and 3176 cm-1 corresponds a stretch for C-H
bonds, peak around 1500-810 cm-1 showed the bond stretch for N-O. Zeta size was found to be 144 nm and zeta
potential was found to be -0.1 mV.The silver nanoparticles have been produced by C.coriaria extracts, which is an
economical, efficient and eco-friendly process. UV–vis spectrophotometer, XRD, AFM and SEM techniques have
confirmed the reduction of silver nitrate to silver nanoparticles.
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| Keyword:
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Caesalpinia coriaria, UV–vis spectrophotometer, FTIR, Zeta Analysis,AFM, SEM, AgNPs,.
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| EOI:
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| DOI:
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https://doi.org/10.31838/ijpr/2019.11.01.029
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| Download:
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