Green Synthesis of Copper Nanoparticles Using Alchornea laxiflora Leaf Extract and Their Catalytic Application for Oxidative Desulphurization of Model Oil

Olajire, Abass A.; Ifediora, N. F.; Bello, Muhammed; Benson, Nsikak U.

doi:10.1007/s40995-017-0404-9

Cited by 38 publications

(22 citation statements)

References 43 publications

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“…The biogenic copper nanoparticle was reported to show high catalytic activity in the oxidative desulphurization of model oil. The zinc oxide nanoparticles showed good photodegradation of Congo red dye and tyrosinase inhibition activity [20].…”

Section: Mimosamentioning

confidence: 98%

“…The plant is used traditionally in the treatment of many diseases such as pile, Dysentery, Malaria, Eczema, Cough and High fever [19]. The reducing and stabilizing potentials of the phytochemicals of Alchornea laxiflora have been exploited in plant mediated synthesis of various nanoparticles such as zinc oxide [14] and copper [20]. The biogenic copper nanoparticle was reported to show high catalytic activity in the oxidative desulphurization of model oil.…”

Section: Mimosamentioning

confidence: 99%

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Hydrothermal Assisted Synthesis and Biological Evaluation of Biogenic Silver Nanoparticles

Ekennia¹,

Uduagwu²,

Nwaji³

et al. 2021

Preprint

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We report on hydrothermal synthesis of biogenic silver nanoparticles (AgNPs) using aqueous leaf extract of Alchornea laxiflora for threefold applications in antibacterial screening against Escherichia coli and Staphylococcus aureus, tyrosinase inhibition of mushroom tyrosine enzymes with 3,4-dihydroxyphenylalanine as a substrate and photocatalytic degradation of malachite green dye. The mode of action for the tyrosinase application and kinetics of both the tyrosinase and photocatalytic activities were provided. The localized surface resonance bands of the AgNPs were observed within the range of 424 – 435 nm from the electronic spectral analysis. Fourier transform-infrared studies reveal the functional groups of plant metabolites such as phenolic compounds and amines on the nanoparticles. The Energy Dispersive X-ray result reveals the presence of silver and other elemental compositions from the plant extract. X-ray diffraction result showed a face-centred cubic crystalline structure for the AgNPs. The SEM analyses reveal that the nanoparticles are spherical in shape with average size range of 20-52 nm. The AgNPs exhibited a dose dependent tyrosinase inhibition activity with IC50 of 20.83 µg/ml and a competitive mode of inhibition. The results of photocatalytic degradation of malachite green dye depicted rapid photo inspired degradation of 86 % in less than a min and at reaction rate of 0.136 min-1. The silver nanoparticles showed enhanced antibacterial activities compared to the precursors: silver nitrate and aqueous extract of Alchornea laxiflora.

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Section: Mimosamentioning

confidence: 98%

Section: Mimosamentioning

confidence: 99%

Hydrothermal Assisted Synthesis and Biological Evaluation of Biogenic Silver Nanoparticles

Ekennia¹,

Uduagwu²,

Nwaji³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…One interesting example of application of nanotechnology for environmental remediation is nanorod treatment for the viscosity reduction and desulphurization of heavy oils [102]. The use of nanorods biosynthesized from the extract of Mangifera indica leaves to cause significant decrease in the viscosity of crude oil has been reported [103].…”

Section: Environmental Nanoremediation Under Climate Changementioning

confidence: 99%

Nanotechnology and the Sustainability: Toxicological Assessments and Environmental Risks of Nanomaterials Under Climate Change

Thangadurai

David

Dabire

et al. 2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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At present, natural resources are very limited and inadequate for increasing global population along with uncontrollable environmental pollution. The development of advanced eco-friendly technology and pollution free environment is very necessary for the current situation. Nanotechnology is playing a vital role in the development of "cleaner" environment and "greener" technologies for sustainable livelihood and environment. Nanotechnology is involved in many sectors like pharmaceuticals, agriculture, food, energy, environment, cosmetics, electronics, chemicals, and so on. There are many consumer products containing nanomaterials available in the market for ready use by human beings. Hence, human exposure to nanomaterials is possible to occur during processing at occupational level and personal usage at consumer level. At present, nanotechnology is a promising tool as it has high performance and is cost-effective in

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“…For the preparation of PI a standard literature procedure was followed with slight modification [22]. 1.0 g of PTCDAH and PPDA were taken in a 100 mL round bottomed flask (RBF).…”

Section: Synthesis Of Pi and Its Nanocompositesmentioning

confidence: 99%

“…Their thermal and mechanical properties depend on the Mw of the PI and the method adopted for its synthesis. Various diamines including phenyl derivative of ODA [14], ODA [15][16][17][18][19][20][21][22][23][24], aniline-formaldehyde resin [25], and PPDA [26,27] have been used in the polymer industry. In order to catalyse the yield and their physical, chemical, optical and mechanical properties of the nanosized materials are added as filler.…”

Section: Introductionmentioning

confidence: 99%

Structural, Thermal, Morphological, Adsorption and Catalytic Properties of Poly(BPDAH-co-ODA/PPDA)-Ag/V2O5 Nanocomposites

Sribala

Meenarathi

Anbarasan

2019

Bull. Chem. React. Eng. Catal.

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Thermally stable polyimides (PIs) were prepared by condensation technique at 160 ºC for 5 hours in N-methylpyrrolidone (NMP) medium under N2 atmosphere both in the presence and absence of metal (Ag) and metaloxide (MO) (V2O5) nanoparticles (NPs). The synthesized polymers are characterized by Fourier Transform Infra Red (FT-IR) spectroscopy, 1H Nuclear Magnetic Resonance (1H NMR) spectroscopy, Differential Scanning Calorimetry (DSC), Thermal Gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy with Energy Dispersive X-Ray (FE-SEM and EDX). The FT-IR spectrum showed a peak at 1786 cm-1 corresponding to the C=O stretching of dianhydride. The aromatic proton signals appeared between 6.7 and 7.5 ppm in the 1H-NMR spectrum of the resultant PIs. The oxydianiline (ODA) based PI with Ag NP loaded system exhibited the highest Tg value. The apparent rate constant values for the adsorption and catalytic reduction of p-nitrophenol (PNP), Cr6+ and rhodamine 6G (R6G) dye were determined with the help of UV-visible spectrophotometer. Among the catalysts, the system loaded with V2O5 NP has higher kapp values. The experimental results are critically analyzed and compared with the previously available literature values. Copyright © 2020 BCREC Group. All rights reserved

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Green Synthesis of Copper Nanoparticles Using Alchornea laxiflora Leaf Extract and Their Catalytic Application for Oxidative Desulphurization of Model Oil

Cited by 38 publications

References 43 publications

Hydrothermal Assisted Synthesis and Biological Evaluation of Biogenic Silver Nanoparticles

Hydrothermal Assisted Synthesis and Biological Evaluation of Biogenic Silver Nanoparticles

Nanotechnology and the Sustainability: Toxicological Assessments and Environmental Risks of Nanomaterials Under Climate Change

Structural, Thermal, Morphological, Adsorption and Catalytic Properties of Poly(BPDAH-co-ODA/PPDA)-Ag/V2O5 Nanocomposites

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