New frontiers in water purification: highly stable amphopolycarboxyglycinate-stabilized Ag-AgCl nanocomposite and its newly discovered potential

A simple synthetic procedure for high-stable dispersions of porous composite Ag/AgCl nanoparticles stabilized with amphoteric surfactant sodium tallow amphopolycarboxyglycinate has been proposed for the first time. The prepared samples were characterized by UV-vis spectroscopy, x-ray powder diffract...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2016-09, Vol.49 (37), p.375501-375509
Main Authors: Krutyakov, Yurii A, Zherebin, Pavel M, Kudrinskiy, Alexey A, Zubavichus, Yan V, Presniakov, Mikhail Yu, Yapryntsev, Alexey D, Karabtseva, Anastasia V, Mikhaylov, Dmitry M, Lisichkin, Georgii V
Format: Article
Language:English
Subjects:
Ag@AgCl
bactericidal activity
Dispersions
EXAFS
HRTEM
Nanoparticles
photocatalysis
Scanning electron microscopy
Silver
Surfactants
Transmission electron microscopy
X-ray diffraction
X-rays
XANES
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Summary:A simple synthetic procedure for high-stable dispersions of porous composite Ag/AgCl nanoparticles stabilized with amphoteric surfactant sodium tallow amphopolycarboxyglycinate has been proposed for the first time. The prepared samples were characterized by UV-vis spectroscopy, x-ray powder diffraction (XRD), x-ray photoelectron spectroscopy, small area electron diffraction (SAED), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and electron probe micro-analysis. In addition, measurements (carried out at the Kurchatov synchrotron radiation source stations) of the Ag K-edge extended x-ray absorption fine structure (EXAFS) and x-ray absorption near edge structure (XANES) spectra and XRD of the prepared nanoparticles have been performed. The obtained results suggest that small-sized Ag clusters are homogeneously distributed in the mass of the AgCl nanoparticle (~80 nm) formed during the synthesis. The Ag/AgCl dispersion demonstrates photocatalytic activity (with respect to methyl orange) and high bactericidal activity against E. coli. This activity is superior to the activity of both Ag and AgCl nanoparticles stabilized by the same surfactant. Thus, porous composite Ag/AgCl nanoparticles can be used as a multifunctional agent that is able to remove both pollutants and bacterium from water.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/49/37/375501