Green synthesis of copper oxide nanoparticles using extracts of Solanum macrocarpon fruit and their redox responses on SPAu electrode

Okpara, Enyioma C.; Ogunjinmi, Oluwasayo Esther; Oyewo, Opeyemi A.; Fayemi, Omolola E.; Onwudiwe, Damian C.

doi:10.1016/j.heliyon.2021.e08571

Cited by 17 publications

(5 citation statements)

References 36 publications

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“…It was then cooled, and the product was collected by centrifuging at 5000 rpm for 15 min, rinsed three times with a solution of ethanol and distilled H 2 O to remove possible remnant ions in the final product. The product was put in a crucible and dried in an oven at 80 °C for 8 h to ensure complete drying ( Okpara et al., 2021 ). After drying, the resultant paste was subjected to calcination in a furnace for 2 h at 450 °C.…”

Section: Methodsmentioning

confidence: 99%

Physico-chemical characteristics and cytotoxicity evaluation of CuO and TiO2 nanoparticles biosynthesized using extracts of Mucuna pruriens utilis seeds

Gamedze

Mthiyane

Babalola

et al. 2022

Heliyon

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Section: Methodsmentioning

confidence: 99%

Physico-chemical characteristics and cytotoxicity evaluation of CuO and TiO2 nanoparticles biosynthesized using extracts of Mucuna pruriens utilis seeds

Gamedze

Mthiyane

Babalola

et al. 2022

Heliyon

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“…The redox behavior of the modified proton pump membrane was studied using cyclic voltammetry [21]. The voltammetry measurement was measured using AUTOLAB PGSTAT204 (AUT51243) from Metrohm, Singapore.…”

Section: Characterization Of Proton Pump Membranementioning

confidence: 99%

Modification of Proton Pump Membrane using Polyvinylpyrrolidone (Pvp) for Potential Total Alkalinity Sensing

Ahmad

Ahmad²,

Omar³

et al. 2023

Jurnal Teknologi

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Total alkalinity is one of the important parameter in the regulation of seawater carbonate chemistry system to determine the capacity of water to neutralize acid. In this paper, a new proton pump membrane was successfully modified using polyvinylpyrrolidone (PVP) as a supporting material due to its excellent chemical properties. The surface morphology of the membrane was thoroughly studied using Scanning Electron Microscope (SEM), which showed the presence of pore structure, ascribed to the presence of low molecular weight of PVP. The absorption of membrane was studied using Ultraviolet-Visible (UV-Vis) spectrophotometer, where the peak appeared at 539 nm-1. The functional group of the modified membrane was analyzed using Fourier Transform Infrared Spectroscopy (FTIR), and the spectra showed almost similar between modified membrane with PVP and without PVP. The electrochemical behaviour of the membrane was evaluated by cyclic voltammetry (CV) using gold (Au) electrode and the resulting voltammogram showed that the modified membrane with PVP has higher current reading compared to the membrane without PVP, indicating that there is redox reaction occured during the immobilization. The condition and perfomance of modified proton pump membrane with PVP was compared and analyzed.

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“…Their average size is around 31 nm (29 nm-38 nm). Most greenly synthesized CuO NPs are spherical (Amin et al, 2021, Alhalili, 2022, but quasispherical (Okpara et al 2021) and rod-shaped CuO (Tavakoli et al, 2019) are also found. It is anticipated that an increased number of edges, corners, and faces on cubic-shaped CuO NPs might be responsible for their excellent peroxidase activity (Ni and Wang, 2015).…”

Section: Characterization Of the Synthesized Cuo Nps In The Basic Wat...mentioning

confidence: 99%

Optimization of the cupric oxide nanoparticles synthesis by novel spondias mombin peel extract exhibited excellent peroxidase activity

Akanda

Ema

Haque

et al. 2022

J Bangladesh Acad Sci

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This study describes a straightforward protocol for synthesizing cupric oxide nanoparticles from the peel extract of Spondias mombin. The CuO NPs were produced in a basic H2O solution as cubic-shaped, homogenous nanoparticles with excellent peroxidase activity without taking any special precautions. The influence of the concentration of the peel extract, temperature as well as the synthesis medium on CuO NPs production has been investigated extensively. The typical UV-visible absorption maxima observed at wavelengths of 279 and 383 nm observed in spectrophotometry confirmed the formation of CuO NPs. Moreover, the homogeneity, shape (cubic), and size (approximately averaged ⁓31nm (29nm⁓38nm)) of the synthesized CuO nanoparticles under optimum conditions were confirmed through the SEM technique. Besides, its elemental compositions, capping agent, and crystallinity were investigated through EDS, FT-IR and XRD. Finally, in the presence of hydrogen peroxide (H2O2), the as-prepared CuO NPs demonstrated excellent peroxidase activity against 3,3',5,5'-tetramethylbenzidine (TMB). J. Bangladesh Acad. Sci. 46(2); 135-145: December 2022

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Green synthesis of copper oxide nanoparticles using extracts of Solanum macrocarpon fruit and their redox responses on SPAu electrode

Cited by 17 publications

References 36 publications

Physico-chemical characteristics and cytotoxicity evaluation of CuO and TiO2 nanoparticles biosynthesized using extracts of Mucuna pruriens utilis seeds

Physico-chemical characteristics and cytotoxicity evaluation of CuO and TiO2 nanoparticles biosynthesized using extracts of Mucuna pruriens utilis seeds

Modification of Proton Pump Membrane using Polyvinylpyrrolidone (Pvp) for Potential Total Alkalinity Sensing

Optimization of the cupric oxide nanoparticles synthesis by novel spondias mombin peel extract exhibited excellent peroxidase activity

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