2D graphene supported nickel oxide nano-composite for fiber optic ethanol gas sensing, removal of azo dye, and biological activity

Green synthesis of multifunctional metal oxide nanoparticles and its composites are widely evaluated for their efficacy in environmental and biomedical applications. In this study, green synthesized nickel oxide nanoparticles (NiO–NPs) using Tribulus terrestris extract were anchored on graphene oxid...

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Published in:Journal of materials science. Materials in electronics 2022-04, Vol.33 (12), p.9498-9511
Main Authors: Kavitha, G., Vinoth kumar, J., Arulmozhi, R., Kamath, S. Manjunath, Priya, A. Kalai, Rao, K. Subha, Abirami, N.
Format: Article
Language:English
Subjects:
Biological activity
Biomedical materials
Catalysis
Characterization and Evaluation of Materials
Charge transport
Chemistry and Materials Science
Ethanol
Fiber optics
Gas sensors
Graphene
Ion diffusion
Materials Science
Metal oxides
Nanocomposites
Nanoparticles
Nickel oxides
Optical and Electronic Materials
Physiochemistry
Rhodamine
Room temperature
Synergistic effect
X ray photoelectron spectroscopy
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Summary:Green synthesis of multifunctional metal oxide nanoparticles and its composites are widely evaluated for their efficacy in environmental and biomedical applications. In this study, green synthesized nickel oxide nanoparticles (NiO–NPs) using Tribulus terrestris extract were anchored on graphene oxide nanosheets (GO) to obtained nickel oxide -graphene oxide composite (GO–NiO). Further, morphological and physiochemical characterization using X-ray diffraction, RAMAN, FTIR, FESEM, TEM, EDS and XPS revealed incorporation of NiO on GO. UV–Vis spectroscopy analysis suggested a decrease in band gap, which is favourable for photo catalysis and fiber optic gas sensing applications. Consequently, the synthesised GO-NiO nanocomposites displayed substantial response towards photo catalysis of rhodamine B. In addition, room temperature Ethanol gas sensing activity was found to be increased due to the synergistic effect of graphene oxide, which acts as an elastic conductive channel facilitating better charge transport and more favourable ionic diffusion. Moreover, GO-NiO showed an elevated anticancer response compared to NiO against Human renal cell carcinoma cell line (ACHN) as well as Human Tongue Squamous Carcinoma Cell Line (HSC-3). In brief, GO-NiO is a promising multifunctional composite for environmental and biomedical applications.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-07470-5