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Volume 3, Issue 4 (Suppl)
Nano Res Appl
ISSN: 2471-9838
November 07-08, 2017 Singapore
International Meeting on
Advanced Nanomaterials and Nanotechnology
Nanomaterials Meetings 2017
November 07-08, 2017
Page 27
Elias E Elemike et al., Nano Res Appl 2017, 3:4
DOI: 10.21767/2471-9838-C1-005
Facile synthesis ofAg andAg-CuO nanoparticles using aqueous extracts of
Mimosa pigra
and their catalytic
activities in the degradation of some common pollutants
Elias E Elemike, Damian C Onwudiwe, Doris F Ogeleka and Justina I Mbonu
North West University, South Africa
B
iosynthesis of Ag and Ag-CuO nanoparticles using aqueous leaf extracts of
Mimosa pigra
is presented. The nanoparticles
were synthesized using different concentration ratios of aqueous leaf extract of
Mimosa pigra
to the silver and copper salts.
The nanoparticles were characterized using UV-vis spectroscopy, Fourier transform infra-red (FTIR) spectroscopy, powder X-ray
diffraction (PXRD), scanning and transmission electron microscopies. Stable nanoparticles with average particle size of 17.5 nm (Ag)
and 49.5 nm (Ag-CuO), which were capped by the plant extracts via the O-H and C=O groups from flavonoids, tannins and other
bio compounds were obtained. The UV-vis spectra revealed earlier formation of surface Plasmon bands for silver nanoparticles when
the volume of extract was reduced, although with lower intensity. In the spectrum of Ag-CuO nanoparticles, broad bands around
400-500 nm appeared in the region of 365-369 nm. Crystallite size of approximately 50 nm for the Ag-CuO was calculated from XRD
results using Scherrer equation and the particles were well dispersed as shown by the TEM images. The photocatalytic activities of
the synthesized Ag and Ag-CuO nanoparticles were studied towards the degradation of methylene blue (MB) and hydrogen peroxide
(H
2
O
2
). The results provide eco-friendly reaction toward environmental remediation from common pollutants.
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