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May 13-14, 2019 | Prague, Czech Republic
Chemistry and Medicinal Chemistry
9th World Congress on
Asian Journal of Biomedical and Pharmaceutical Sciences | Volume 9 ISSN: 2249-622X
Silver and copper nanoparticles by the pulsed plasma in liquid and their
antibacterial properties
Emil Omurzak
Kyrgyz-Turkish Manas University, Kyrgyzstan
One of the most important properties of silver
nanoparticles is their antimicrobial action against
several bacteria, fungi, and viruses. Surprisingly, nano Ag
are safe and non-toxic to human and animal cells at low
concentrations because the possible toxicity of silver
nanoparticles to the environment is considered extremely
low as compared to other materials.
Silver and coppr nanoparticles were prepared by using
pulsed plasma in liquid method. This is a low voltage
pulsed spark discharge in a dielectric liquid. The electrodes
of about 2 mm in diameter and about 10 mm in length
made of pure silver rods were submerged in a 50 ml pyrex
beaker filled with deionized water and plasma (200 V, 50 A
(peak), 10 μs) was generated between the silver electrodes
for about 15 min. Polyvinylpyrrolidone (PVP), Cetyl
trimethylammonium bromide (CTAB), Sodium n-Dodecyl
Sulphate (SDS) were used as a stabilizing agents.
The XRD spectra of the prepared samples indicated the
face-centered cubic crystalline structure of metallic silver
nanoparticles. Spherically shaped silver nanoparticles of
diameter 2.2 ± 0.8 nm were synthesized by the pulsed
plasma in aqueous solution with PVP surfactant. Similarly,
silver nanoparticles of diameter 1.9 ± 0.4 nm size were
obtained with SDS surfactant. In vitro antibacterial
properties of all the synthesized silver nanoparticles
against the Gram-negative bacteria Escherichia coli were
examined by Kirby–Bauer disk diffusion susceptibility
method. It was noticed that the stabilized with SDS
silver nanoparticles demonstrated a better antibacterial
activity against bacterial strains as compared to the silver
nanoparticles stabilized with PVP, CTAB.
Speaker Biography
Emil Omurzak, Dr. Industrial Enginering, graduated from Physics and
Electronics Department, Kyrgyz State National University in 2002. He
worked for the National Academy of Sciences of Kyrgyzstan in 2002
– 2004 at the Institute of Physics, Laboratory of Plasma Technologies
and Institute of Chemistry and Chemical Technology, Laboratory of
Nanotechnologyasscientist.From2004until2008,hestudiedPhDcourse
at the Kumamoto University, Graduate School of Science and Technology
and obtained Doctor of Engineering degree in 2008 for the dissertation
work “Synthesis of Nanomaterials by Impulse Plasma in Liquid”. After
that he worked as postdoctoral fellow at the central laboratory of
Kumamoto University Innovation Collaboration Organization. From
2009 to 2015, he worked as specially appointed Assistant Professor at
the Kumamoto University. Since 2015, he is Assistant Professor of the
Chemical Engineering Department, Faculty of Engineering, Kyrgyz-
Turkish Manas University. He has published more than 30 papers and 10
patents. His research is focused on the synthesis of nanomaterials by the
pulsed plasma in liquid method and studying their physical and chemical
properties for bio-medical, physical, chemical applications.
e:
Emil Omurzak, Asian J Biomed Pharmaceut Sci, Volume:9
DOI: 10.4066/2249-622X-C2-020