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Materials Science and Nanotechnology | Volume 2
May 21-22, 2018 | New York, USA
International Conference on
Nanoscience & Technology
Green chemistry proffers an alternative route to
conventional physical and chemical method of
nanoparticle synthesis, and has earned the interest of
researchers worldwide. This is due to the several advantages
which this synthetic method offers. Green synthesis of
nanoparticles via the use of aqueous plant extract provides
environmentally benign and cheap route to the synthesis
of nanoparticles. In this work, we have synthesized ZnO,
CaO and SnO2 nanoparticles using aqueous broccoli extract
and characterized the prepared nanoparticles with X-ray
diffraction (XRD), transmittance electron microscopy
(TEM), UV-vis absorption and fourier transform infrared
(FTIR) spectroscopic techniques. Antibacterial activities of
the nanoparticles have been evaluated against strains of
S. aureus and P. aeruginose bacteria. The nanoparticles all
exhibited greater antibacterial potency towards S. aureus
than P. aeruginose bacteria with ZnO nanoparticles being
the most potent against the aforementioned bacterial
strains. Photocatalytic properties of the nanoparticles
were studied for the reduction of methylene blue and
bromocresol green. All the nanoparticles showed different
degrees of photodegradations of the organics dyes and
similarly ZnO nanoparticles displayed a greatest efficiency
of photocatalytic degradation followed by SnO2 and CaO
nanoparticles exhibited the least efficiency.
Speaker Biography
Osuntokun J completed his Ph.D. in 2016 from University of Fort Hare, South Africa. He
is presently a postdoctoral research fellow in North-West University, South Africa. He
has about 10 publications in international reputed journals.
e:
Phyto-mediated synthesis, photocatalytic and biological activities of Zno, Cao, and Sno2 nanoparticles
Osuntokun, J
North-West University, South Africa