Green synthesis of silver nanoparticles and their applications as colorimetric probe for determination of Fe 3+ and Hg 2+ ions

Silver nanoparticles (AgNPs) were prepared by a green method using leaf extract. They were characterised by UV-vis spectroscopy, Fourier transform infrared spectroscopy and their X-ray diffraction pattern. Their sizes were determined by scanning electron micrographs, transmission electron micrograph...

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Published in:IET nanobiotechnology 2018-08, Vol.12 (5), p.673-677, Article 673
Main Authors: Azimpanah, Razieh, Solati, Zahra, Hashemi, Majid
Format: Article
Language:English
Subjects:
Colorimetry - methods
Cordia - metabolism
Green Chemistry Technology - methods
Iron - analysis
Limit of Detection
Mercury - analysis
Metal Nanoparticles - chemistry
Silver - chemistry
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description Silver nanoparticles (AgNPs) were prepared by a green method using leaf extract. They were characterised by UV-vis spectroscopy, Fourier transform infrared spectroscopy and their X-ray diffraction pattern. Their sizes were determined by scanning electron micrographs, transmission electron micrographs imaging and dynamic light scattering analysis. The shapes of nanoparticles were spherical or truncated triangular and their average size was determined to be 51.6 nm. Their solution was stable at least for one month. The prepared AgNPs were used as a selective chemical sensor for determination of iron(III) (only when Cl ions were present in the medium) and mercury(II) ions with detection limits of 0.084 and 0.037 nM, respectively. It was shown that the mechanism of these detections is through oxidation of Ag atoms by Fe and Hg ions.
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subjects Colorimetry - methods
Cordia - metabolism
Green Chemistry Technology - methods
Iron - analysis
Limit of Detection
Mercury - analysis
Metal Nanoparticles - chemistry
Silver - chemistry
title Green synthesis of silver nanoparticles and their applications as colorimetric probe for determination of Fe 3+ and Hg 2+ ions
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