Asian Nano Forum Conference , 2015-03-08

Title : ( Synthesis, structural, optical and antibacterial properties of Mg (1-x) Ag(x) O (x= 0, 0.01) nanopowders )

Authors: Ahmad Kompany , sayedeh hussaini , Mansour Mashreghi , علی خرسند زاک ,

Citation: BibTeX | EndNote

The synthesis of MgO and Mg99%Agl%0 nanopowders was performed by Sol-gel method in gelatin media. The prepared powders were characterized usmg X-ray diffraction analysis (XRD), fourier transform infrared (FT-IR) spectroscopy, UV-Visible spectroscopy and transmission electron microscopy (TEM). Also, antibacterial property of the prepared samples was investigated by spectrophotometric method on Gram-negative Escherichia coli and Gram-positive, Bacillus subtilis. XRD analysis showed the structures of the prepared samples are cubic. The crystallite sizes were determined by size-strain plot (SSP) method. For pure MgO, the average crystallite size was found about 20 nm and for MgO and Ag particles in Mg99%Agl%0 nanocomposite is 23 and 44 nm, respectively. FT-IR specteroscopy confirmed the formation of MgO with vibration mode of Mg-O. TEM image showed the spherical shape of the particles with the average diameter of 21nm. The UV-Vis specteroscopy indicated that the energy band gaps of MgO andMg99%Agl%0 are 4.5 and 5.2eV, respectively.Mg99%Agl%0 and MgO nanocomposite showed high antibacterial activity against E.coli especially in 550pg/ml and 750pg/ml concentration. Mg99%Agl%0 nanocomposite in 250pg/ml had more antibacterial activity comparing to Mgo which most probably could be due to the existence of Ag nanoparticles in Mg99%Agl%0 nanocomposite. Also, it was found out that MgO nanopowders completely inhibit the growth of B. subtilis, in 550pg/ml and 750pg/ml of nanopowders.

Keywords

, Nanocomposit, MgO nanoparticle,
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@inproceedings{paperid:1049465,
author = {Kompany, Ahmad and Hussaini, Sayedeh and Mashreghi, Mansour and علی خرسند زاک},
title = {Synthesis, structural, optical and antibacterial properties of Mg (1-x) Ag(x) O (x= 0, 0.01) nanopowders},
booktitle = {Asian Nano Forum Conference},
year = {2015},
location = {کیش, IRAN},
keywords = {Nanocomposit; MgO nanoparticle; Antibacterial},
}

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%0 Conference Proceedings
%T Synthesis, structural, optical and antibacterial properties of Mg (1-x) Ag(x) O (x= 0, 0.01) nanopowders
%A Kompany, Ahmad
%A Hussaini, Sayedeh
%A Mashreghi, Mansour
%A علی خرسند زاک
%J Asian Nano Forum Conference
%D 2015

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