Phytoextract mediated ZnO/MgO nanocomposites for photocatalytic and antibacterial activities

[Display omitted] •Green synthesis of nanoparticles and nanocomposites were done using Ricinus Communis L. plant seedless fruit extract.•These nanoparticles and nanocomposites were characterized by different characterization techniques.•ZnO/MgO- nanocomposites (1:1) exhibited enhanced photocatalytic...

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Published in:	Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2019-12, Vol.385, p.112049, Article 112049
Main Authors:	Panchal, Priyanka, Paul, Devina Rattan, Sharma, Anshu, Hooda, Drashana, Yadav, Rashmi, Meena, Poonam, Nehra, S.P.
Format:	Article
Language:	eng
Subjects:	Antibacterial activity Catalytic activity Chemical composition Coliforms E coli Electron microscopes Fourier transforms Functional analysis Green Infrared analysis Infrared spectroscopy Klebsiella Magnesium oxide Methylene blue Nanocomposites Nanoparticles Photocatalysis Photocatalytic activity Plant extracts Scanning electron microscopy Spectroscopic analysis Spectrum analysis Synthesis X-ray diffraction X-ray spectroscopy Zinc oxide ZnO/MgO-nanocomposites
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Summary:	[Display omitted] •Green synthesis of nanoparticles and nanocomposites were done using Ricinus Communis L. plant seedless fruit extract.•These nanoparticles and nanocomposites were characterized by different characterization techniques.•ZnO/MgO- nanocomposites (1:1) exhibited enhanced photocatalytic and antibacterial activity. This paper discusses the investigation of pure MgO, ZnO nanoparticles (NPs) and ZnO/MgO nanocomposites (NCs) via plant based green assisted simple, fast, economical and environmental friendly method with the help of Ricinus communis L. plant seedless fruit extract (SFE). The green route synthesized NPs and NCs calcinated at the temperature of 450 °C were used for further optical studies with ultraviolet–visible spectroscopy (UV–vis), structural studies by X-ray diffraction (XRD), functional analysis by Fourier-transform infrared spectroscopy (FTIR), microscopic determination by scanning electron microscope and transmission electron microscope (SEM, TEM), elemental composition analyzed by using Energy-dispersive X-ray spectroscopy (EDX). Successfully synthesized and characterized NPs and NCs were, further, used for the antibacterial studies towards Escherichia coli (E.coli), Klebsiella bacteria(s) and photocatalytic activity towards methylene blue (MB). In comparison to the pure NPs and NCs, the ZnO/MgO-NCs (1:1) exhibited an enhanced antibacterial activity and resulted in 1.5–2.8 times and 1.27–3.5 times larger radius for zone of inhibition in case of E.coli and Klebsiella respectively, where as the value for photocatalytic apparent rate constant was found to be 1.49–5.25 times more.
ISSN:	1010-6030 1873-2666