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Green synthesis of gold nanoparticles using Nyctanthes arbortristis flower extract
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Journal Article
Green synthesis of gold nanoparticles using Nyctanthes arbortristis flower extract
2011
Overview
The present study explores the reducing and capping potentials of ethanolic flower extract of the plant
Nyctanthes arbortristis
for the synthesis of gold nanoparticles. The extract at different volume fractions were stirred with HAuCl
4
aqueous solution at 80 °C for 30 min. The UV–Vis spectroscopic analysis of the reaction products confirmed successful reduction of Au
3+
ions to gold nanoparticles. Transmission electron microscope (TEM) revealed dominant spherical morphology of the gold nanoparticles with an average diameter of 19.8 ± 5.0 nm. X-ray diffraction (XRD) study confirmed crystalline nature of the synthesized particles. Fourier transform infra-red (FTIR) and nuclear magnetic resonance (NMR) analysis of the purified and lyophilized gold nanoparticles confirmed the surface adsorption of biomolecules during preparation and caused long-term (6 months) stability. Low reaction temperature (25 °C) favored anisotropy. The strong reducing power of the flower extract can also be tested in the green synthesis of other metallic nanoparticles.
Publisher
Springer-Verlag,Springer,Springer Nature B.V
Subject
/ Biological and medical sciences
/ Chemistry and Materials Science
/ Environmental Engineering/Biotechnology
/ Flowers
/ Fourier transform infrared spectroscopy
/ Fundamental and applied biological sciences. Psychology
/ gold
/ Green Chemistry Technology - methods
/ Industrial and Production Engineering
/ Industrial Chemistry/Chemical Engineering
/ ions
/ Metal Nanoparticles - chemistry
/ Microscopy, Electron, Transmission
/ nanogold
/ NMR
/ nuclear magnetic resonance spectroscopy
/ Spectrophotometry, Ultraviolet
/ Spectroscopy, Fourier Transform Infrared
/ transmission electron microscopes
