scholarly journals Green and Traditional Synthesis of Copper Oxide Nanoparticles—Comparative Study

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2502
Author(s):  
Obakeng P. Keabadile ◽  
Adeyemi O. Aremu ◽  
Saheed E. Elugoke ◽  
Omolola E. Fayemi
Keyword(s):  
Cyclic Voltammetry ◽  
Zeta Potential ◽  
Copper Oxide ◽  
Electrochemical Sensors ◽  
Modified Electrodes ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Sem Images ◽  
Redox Probe ◽  
Vis Spectroscopy

The current study compared the synthesis, characterization and properties of copper oxide nanoparticles (CuO) based on green and traditional chemical methods. The synthesized CuO were confirmed by spectroscopic and morphological characterization such as ultraviolet-visible (UV-vis) spectroscopy, fourier transform infrared (FTIR) spectroscopy, zeta potential, scanning electron microscopy (SEM) and energy dispersed X-ray (EDX). Electrochemical behavior of the modified electrodes was done using cyclic voltammetry (CV) in ferricyanide/ferrocyanide ([Fe(CN)6]4−/[Fe(CN)6]3−) redox probe. As revealed by UV spectrophotometer, the absorption peaks ranged from 290–293 nm for all synthesized nanoparticles. Based on SEM images, CuO were spherical in shape with agglomerated particles. Zeta potential revealed that the green CuO have more negative surface charge than the chemically synthesized CuO. The potential of the green synthesized nanoparticles was higher relative to the chemically synthesized one. Cyclic voltammetry studies indicated that the traditional chemically synthesized CuO and the green CuO have electrocatalytic activity towards the ferricyanide redox probe. This suggests that the green CuO can be modified with other nanomaterials for the preparation of electrochemical sensors towards analytes of interest.

Development of Copper Loaded Nanoparticles Hydrogel Made from Waste Biomass (Sugarcane Bagasse) for Special Medical Application

2020 ◽  
Vol 847 ◽  
pp. 102-107
Author(s):  
Harish Kumar ◽  
Avneesh Kumar Gehlaut ◽  
Himanshu Gupta ◽  
Ankur Gaur ◽  
Jin Won Park
Keyword(s):  
Escherichia Coli ◽  
Bacillus Subtilis ◽  
Copper Oxide ◽  
Sugarcane Bagasse ◽  
Copper Oxide Nanoparticles ◽  
Diffusion Method ◽  
Oxide Nanoparticles ◽  
Waste Biomass ◽  
Cuo Nps ◽  
Vis Spectroscopy

This research is based on the creation of copper oxide nanoparticles (CuO-NPs) hydrogel through in situ method. The effective UV-Vis spectroscopy absorption peak of 610 nm indicates the existence of copper oxide nanoparticles (CuO-NP) group because of surface Plasmon resonance (SPR). Characterization of CuO-NPs was carried out by SEM, TEM, EDX, and XRD. However, the action of prepared nanocomposite hydrogels swelling was examined at different pH and saline solutions. In addition, CuO-NPs were also tested using the disk plate diffusion method by means of adverse effect of bacteria Gram-positive bacteria (Bacillus subtilis) as well as Gram-negative bacteria (Escherichia coli). The CuO-NPs hydrogels isolated from lab-made CMC (made from sugarcane bagasse) indicates that the Bacillus subtilis as well as Escherichia coli have greater antibacterial activity compared with synthetic CMC purchase from the market. CuO-NPs can be used effectively in biomedical applications with the production of hydrogels.

scholarly journals GREEN SYNTHESIS OF COPPER OXIDE NANOPARTICLES

2011 ◽  
Vol 14 (3) ◽  
pp. 61-69
Author(s):  
Hanh Ngoc Nguyen ◽  
Thao Huu Vo
Keyword(s):  
Electron Microscopy ◽  
Copper Oxide ◽  
Surface Effect ◽  
Surface Active Agent ◽  
Active Agent ◽  
Copper Oxide Nanoparticles ◽  
Basic Medium ◽  
Oxide Nanoparticles ◽  
Copper Salts ◽  
Sem Images

Nanoparticles of metal and metallic oxides have become a very active research area in the field of material chemistry. The surface effect is mainly responsible for deviation of the properties of nano-materials from that of the bulk. Nanosize copper oxide was synthesized by hydrolysis of copper salts in basic medium using biodegradable non-ionic polymer polyethylene glycol (PEG) as surface active agent The X-ray powder diffraction patterns (XRD) present typical peaks of copper oxides formed. The transmission electron microscopy (TEM) and scanning electron microscopy (SEM) images determined the shape and the nanosizes of the particles of about 10-30nm. The results exhibited the role of intermediate nanosize copper hydroxide species on the formation of copper oxide nanoparticles. The influence of synthesis temperature, reaction time, calcination temperature, etc. was studied.

scholarly journals Purpureocillium lilacinum Mediated Biosynthesis Copper Oxide Nanoparticles with Promising Removal of Dyes

2021 ◽  
Vol 12 (2) ◽  
pp. 1397-1404
Keyword(s):  
Copper Oxide ◽  
Size Range ◽  
Xrd Analysis ◽  
Copper Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Purpureocillium Lilacinum ◽  
Cuo Nps ◽  
Vis Spectroscopy ◽  
Cost Efficient

Biosynthesized nanoparticles have a huge perspective. It is an environment-friendly, cost-efficient, reproducible, and energy-efficient method compared to physical or chemical synthesis. In the present study, biosynthesis of copper oxide nanoparticles (CuONP) was done using Purpureocillium lilacinum. Characterization of synthesized CuONP was done by using UV–vis spectroscopy, TEM, and XRD analysis. UV–vis gave characteristic SPR peak for CuONP at 360 nm. TEM image reveals that the morphology of biosynthesized CuONP was spherical, and their size range between 4.03nm to 8.83nm. The XRD analysis confirmed the crystalline nature of CuO with a size range of 6-26.6nm. Further comparative study of photocatalytic degradation of navy blue and safranin using CuONP was done. CuO-NPs exhibited potential catalytic activity in navy blue (57.5 %) and safranin (63 %), respectively.

scholarly journals Biosynthesis of copper oxide nanoparticles using herbal formulation and its characterisation

2019 ◽  
Vol 10 (3) ◽  
pp. 2117-2119
Author(s):  
Revathi B ◽  
Rajeshkumar S ◽  
Anitha Roy ◽  
Lakshmi T
Keyword(s):  
Copper Oxide ◽  
Moringa Oleifera ◽  
Spectroscopic Analysis ◽  
Copper Oxide Nanoparticles ◽  
Cuo Nanoparticles ◽  
Oxide Nanoparticles ◽  
Synthesis Of Nanoparticles ◽  
Herbal Formulation ◽  
Vis Spectroscopy ◽  
Average Size

To study the biosynthesis of copper oxide nanoparticles using herbal formulation and its characterisation. To study the copper oxide nanoparticles biosynthesis using Moringha oriefera  (I) Synthesis of nanoparticles using copper sulphate  (II) Characterisation of nanoparticles using UV-visual spectroscopy. The size of the synthesised nanoparticles are found to be 2-100nm. The graph reached its peak at the wavelength of 300nm using UV-vis spectroscopy. The shape is spherical. These TEM and UV spectroscopic analysis confirmed the synthesis of copper oxide nanoparticles. Overall results, confirmed the size and shape of CuO nanoparticles using this process and suggested their applications in biomedicine. The biosynthesized copper oxide nanoparticles are spherical in shape with an average size of 2-100nm. The present research about the biosynthesis of copper oxide nanoparticles using the plant extract Moringa Oleifera has excellent biocompatibility. The particles which are smaller in size shows more immunity. Hence the nanoparticles are expected to be used in future for the effective drug systems and immunity against diseases.  

scholarly journals Biosynthesis of Copper Oxide Nanoparticles by Marine Streptomyces MHM38 and their Preventive Efficacy Against Paracetamol-Inducing Hepatic Damage of Albino Rats

2020 ◽  
Author(s):  
Moaz Hamed ◽  
Hanaa S.S. Gazwi ◽  
Asmaa M. Youssif
Keyword(s):  
Escherichia Coli ◽  
Candida Albicans ◽  
Copper Oxide ◽  
Salmonella Typhimurium ◽  
Copper Oxide Nanoparticles ◽  
Diffusion Method ◽  
Albino Rats ◽  
Oxide Nanoparticles ◽  
Vis Spectroscopy ◽  
Preventive Efficacy

Abstract Biosynthesis methods, employing microorganisms, have emerged as an eco-friendly, clean and viable alternative to chemical and physical methods. The present study reports the biosynthesis of copper oxide nanoparticles (CuONPs) using cell-free culture supernatant of marine Streptomyces sp. MHM38. For the optimized production of copper oxide nanoparticles, the influence of some parameters such as concentration of copper sulphate, reaction time, filtrate to substrate ratio and pH were studied. 5mM CuSO4 was optimal for NP production. Well-defined CuONP formation occurred after 60 min incubation when equal volume of filtrate (cell-free supernatant) to substrate (CuSO4 solution) was added. NPs remained stable in aqueous solution with increasing time at pH 8. CuONPs were characterized by UV-vis spectroscopy, X-ray diffraction (XRD) and finally the nature of the nanoparticles was identified by elemental analysis (EDX). Uv-vis spectroscopy of CuONPs exhibited peak at 550 nm which corresponds to the Surface Plasmon Resonance of CuONPs. Most of the particles are spherical in shape and size ranges from 1.06 – 6.5 nm analyzed using Transmission Electron Microscope (TEM). Antimicrobial activity of CuONPs was performed by well diffusion method against Enterococcus faecalis ATCC 29212, Salmonella typhimurium ATCC 14028, Pseudomonas aeruginosa ATCC 9027, Escherichia coli ATCC 8939), fungi (Rhizoctonia solani, Fusarium solani, Aspergillus niger) and yeast (Candida albicans ATCC 10237) .The highest antimicrobial activities recorded were against Candida albicans ATCC 10237, were as Salmonella typhimurium ATCC 14028 and Escherichia coli ATCC 8939 showed the lesser activity. The preventive efficacy of CuONPs was evaluated against the oxidative stress induced by paracetamol (PAC) in albino rats. The biochemical findings of CuONPs groups appeared a significant (p˂0.05) diminish in the levels of ALT, AST, ALP, LDH, total and direct bilirubin, Urea, and Creatinine as compared to paracetamol group. Non-enzymatic and enzymatic antioxidants of CuONPs groups were significantly elevated (p˂0.05) in SOD and GSH levels and significantly low NO and MAD levels compared to the paracetamol group. Also, the histopathological examination of the CuONPs groups assured that the impact of improving CuONPs against paracetamol-induced liver damage.

Green Synthesis of Copper Oxide Nanoparticles (CuO NPs) From Aqueous Extract of Seeds of Eletteria Cardamomum and Its Antimicrobial Activity against Pathogens

2020 ◽  
Vol 09 ◽  
Author(s):  
Akshaya Venkatramanan ◽  
Akila Ilangovan ◽  
Pakutharivu Thangarajan ◽  
Anitha Saravanan ◽  
Balachandar M
Keyword(s):  
Antimicrobial Activity ◽  
Copper Oxide ◽  
Green Synthesis ◽  
Aqueous Extract ◽  
Dye Sensitized Solar Cells ◽  
Copper Oxide Nanoparticles ◽  
Diffusion Method ◽  
Oxide Nanoparticles ◽  
Cuo Nps ◽  
Vis Spectroscopy

Background: The Nanomaterials/Nanoparticles are of great interest today because of their small size and large surface area, modular and easily tunable morphology and size. Copper oxide (CuO) nanoparticles are widely used in dye-sensitized solar cells (DSSCs). Research on the synthesis and properties of metallic nanomaterials is a growing field of nanotechnology due to the use of nanoparticles in the scientific, technical, pharmaceutical, and biomedical fields. Green synthesis is an emerging technology for the production of nanoparticles due to its many advantages over traditional physical processes and the method of chemical synthesis. Methods: In this study, we report the cost-effective, long-lasting, stable, and regenerative aqueous extract of Eletteria cardamom seeds to target the synthesis of copper oxide nanoparticles (CuO NPs). This method is completely green, free from toxic and harmful solvents. CuO NPs were synthesized from a cupric nitrate mixture and the aqueous extracts of Eletteria cardamom seeds were kept at room temperature for 24 h. CuO NPs were characterized using UV-visible spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), dynamic light scattering (DLS), and Fourier Transfer infra-red spectroscopy (FTIR) analyzes. UV - Vis spectroscopy revealed the presence of CuO NPs. Results: SEM images stated that the particles were spherical and ranged in size from 1–100nm. FTIR spectra of control (seed extract) and synthesized CuO NPs identify functional groups of active components. In addition, the synthesized CuO NPs were tested for antimicrobial activity by standard disc diffusion method. Conclusion: Nanoparticles found that Escherichia coli and Staphylococcus aureus resistant areas were observed around each well with antimicrobial activity against disease-causing pathogenic strains.

ANTIBIOTIC PROFILE AND ANTIBACTERIAL ACTIVITY OF COPPER OXIDE NANOPARTICLES AGAINST Pseudomonas fluorescens ISOLATED FROM WOUND INFECTION

2019 ◽  
Vol 9 (o3) ◽  
Author(s):  
Haider Qassim Raheem ◽  
Takwa S. Al-meamar ◽  
Anas M. Almamoori
Keyword(s):  
Antibacterial Activity ◽  
Copper Oxide ◽  
Pseudomonas Fluorescens ◽  
Wide Spectrum ◽  
Copper Oxide Nanoparticles ◽  
Morphological Properties ◽  
Clinical Samples ◽  
Oxide Nanoparticles ◽  
Cuo Nps ◽  
Disk Diffusion Assay

Fifty specimens were collected from wound patients who visited Al-Hilla Teaching Hospital. The samples were grown on Blood and MacConkey agar for 24-48 hr at 37oC. The bacterial isolates which achieved as a pure and predominant growth from clinical samples as Pseudomonas fluorescens, were identified using morphological properties and Vitek2 system. The anti-bacterial activity of copper oxide nanoparticles (CuO NPs) against was tested by (disk diffusion assay) using dilutions of (400, 200, 100, 50, 25, and 12.5‎µ‎g/ml). The (MIC and MBC) of each isolate was determined. CuO NPs shows wide spectrum antibacterial activity against tested bacteria with rise zone of inhibition diameter that is proportionate with the increase in nanoparticle concentration. The MIC of CuO NPs extended from 100-200‎µ‎g/ml and the MBC ranged from 200-400‎µ‎g/ml. The antibiotic profile was determined by Viteck 2 compact system (Biomérieux). CuO NPs‎ found highly effective and safe in P. fluorescens wounds infections comparing with used antibiotics.

Green synthesis of copper oxide nanoparticles using aloe vera extract

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Hemalatha D ◽  
Saraswath S
Keyword(s):  
Copper Oxide ◽  
Biomedical Application ◽  
Aloe Vera ◽  
Copper Oxide Nanoparticles ◽  
Klebsiella Pneumonia ◽  
Oxide Nanoparticles ◽  
Cupric Sulfate ◽  
X Ray Diffraction ◽  
Fouriertransform Infrared Spectroscopy ◽  
Effective Use

In material science, green method for synthesis of nanomaterials is feasible, cheaper and eco-friendly protocol. To accomplish this phenomenon, present study was aimed to synthesize Copper oxide nanoparticles using leaf extract of Aloevera with two different precursors CuCl2.2H2O (Cupric chloride) and CuSo4.5H2O (Cupric sulfate). The extraction of Aloevera is employed as reducing and stabilizing agent for this synthesis.Copper oxide Nanoparticles is effective use of biomedical application due to their antibacterial function. The synthesized Copper oxide nanoparticles were characterized by X-Ray Diffraction Spectroscopy (XRD), Energy Dispersive Spectroscopy (EDX), FourierTransform Infrared Spectroscopy (FT- IR) and Scanning Electron Microscope(SEM). XRD studies reveal the crystallographic nature of Copper oxide nanoparticles. Furthermore the Copper oxide nanoparticles have good Antibacterial activity against both gram negative (E.Coli, Klebsiella pneumonia) and gram positive (Bacillus cereus, Staphylococcus aureus)bacteria.

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