Growth of Flower-like Copper Oxide Nanostructures by Glow Discharge …

In this work, synthesis of flower-like copper oxide nanostructures via a plasma-assisted technique based on glow discharge in liquids has been reported for the first time. The preparation process was carried out in a reactor containing a glass

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Synthesis of copper and copper oxide nanomaterials …

In the present study, Cu-based nanomaterials are synthesized by initiating spark discharges between two copper electrodes immersed in de-ionized water. The electrical conductivity of water is varied by adding HCl at very low …

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Dielectric Properties of Copper(II) Oxide Nanoparticles

Keywords: copper oxide, arc discharge, dielectric permittivity, electrical conductivity DOI: 10.1134/S0020168523070075 INTRODUCTION CuO is a p-type semiconductor with high dielectric permittivity and a narrow band gap: 1.2–1.8 eV [1]. Great interest in nanostructured copper oxides is aroused by the fact that they are rather easy to synthe-

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(PDF) One-Step Synthesis of Graphene, Copper and …

In this paper, we report on a modified arc process to synthetize graphene, copper and zinc oxide graphene hybrids. The anode was made of pure graphite or graphite mixed with metals or metal oxides.

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Progress in the treatment of copper(II)-containing wastewater and

The results showed that the copper recovery rate of all experiments reached 99.98 % - 100 %, and the Cu 2+ concentration of the final effluent was <0.3 mg/L. Phase analysis of the aged precipitates showed that all the precipitates were the size of nanoparticles, and the copper precipitated as oxides or zero-valence copper. Compared with methods ...

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مقاله Synthesis of Copper Oxide Using Spark Discharge: Effect

In this research, the effect of electrical spark on copper was examined using a spark discharge device. In a liquid dielectric environment, materials produced from copper metal by adjusting parameters such as current, time, and voltage.

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Reduction of copper surface oxide using a sub

The reduction of copper oxide thin films by a hydrogen plasma generated by an atmospheric-pressure glow (APG) discharge was investigated. The copper oxide films were prepared by heating the ...

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Formation of CuO and Cu2O Crystalline Phases in a Reactor

A method for synthesis of copper oxide nanoparticles in a reactor for low-pressure arc discharge synthesis is presented, and the effect that the oxygen content of the gas mixture …

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Sputter deposition of copper oxide films

Copper oxide thin films are grown by reactive magnetron sputter deposition. To define the parameter space to obtain CuO films, the influence of the oxygen partial pressure, the total pressure, and the discharge current was investigated on the phase formation. ... The discharge voltage behavior finds its origin in the formation of an oxide layer ...

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Titanium oxide coating on copper surface by electrical discharge

The black color observed on the pure copper after placing it in a 0.5 M KOH solution for 3 days is likely due to the formation of copper oxide or other copper compounds [43]. In an alkaline environment, copper can react with oxygen to form cupric oxide (CuO), which is black. The reaction is represented as

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Characteristics of a pulsed hollow cathode discharge operated in …

The discharge is then utilized for deposition of copper nickel oxide thin films on silicon Si(111) wafers and on fluorine-doped tin oxide (FTO) coated glass substrates. The structural and morphological properties of the as-deposited and annealed films are studied with the help of X-ray diffractometry and Raman spectroscopy.

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Arc discharge rapid synthesis of engineered copper oxides nano …

Copper oxide (CuO-NPs) and Copper Nano wires (CuO-NWs) were prepared in controlled size via the alternating current Arc discharge process.

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Reduction of copper surface oxide using a sub-atmospheric …

An attractive way of copper oxide reduction uses annealing in hydrogen atmospheres [11], [13]. As shown by Ramos and co-workers, Cu 2 O powder can be successfully reduced to metal after 120 min of heating in a hydrogen atmosphere at 673 K and 5.3 hPa [13]. In contrast, Ramos and colleagues showed that a combination of a glow discharge hydrogen …

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Spectroscopic Studies of Magnetron Sputtering Plasma Discharge …

Magnetron sputtering plasma for the deposition of copper oxide thin film has been investigated using optical emission spectroscopy and Langmuir probe. The intensity of the light emission from atoms and radicals in the plasma were measured using optical emission spectroscopy (OES). Then, Langmuir probe was employed to estimate the plasma density, …

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Layered double oxide/copper actuates dielectric barrier discharge

Dielectric barrier discharge plasma (DBDP) is a promising advanced oxidation process for water contaminants degradation relying on the coexistence of multiple reactive species. Herein, by introducing carrier copper (CuF), a high catalytic activity ternary layered bimetallic oxide (CoFe-LDO/CuF, CFOC) was synthesized.

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One-Step Synthesis of Graphene, Copper and Zinc Oxide …

In this paper, we report on a modified arc process to synthetize graphene, copper and zinc oxide graphene hybrids. The anode was made of pure graphite or graphite mixed with metals or metal oxides. After applying a controlled direct current, plasma is created in the interelectrode region and the anode is consumed by eroding. Continuous and abundant flux of …

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Synthesis and in situ oxidation of copper micro- and …

In this study, arc discharge plasma between water-immersed copper electrodes was used as promising and simple process for producing copper oxide particles, where water …

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Synthesis and in situ oxidation of copper micro- and

An arc discharge system in deionized water was used to obtain copper oxide particles 44.Deionized water with a resistivity of 18.2 MΩ*cm was obtained using a Sartorius arium 611DI instrument.

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(PDF) One-Step Synthesis of Graphene, Copper and Zinc Oxide …

In this paper, we report on a modified arc process to synthetize graphene, copper and zinc oxide graphene hybrids. The anode was made of pure graphite or graphite mixed with metals or metal oxides.

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Reduction of copper surface oxide using a sub-atmospheric …

In this study, the deoxidation effect of a non-thermal dielectric barrier discharge plasma in an Ar/H 2 gas mixture at 100 hPa and 20 °C was investigated on copper surfaces …

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A Brief Review on Synthesis and Characterization of Copper Oxide

Copper oxide nanoparticles are used in wide range of applications such as catalysis, gas sensors, magnetic storage media, batteries, solar energy transformer, semi conductors and field emission. ... synthesized by directional aggregation and crystallization of tiny CuO nanoparticles generated from a solid-liquid arc discharge process under ...

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Reduction of copper surface oxide using a sub-atmospheric …

An attractive way of copper oxide reduction uses annealing in hydrogen atmospheres [11], [13].As shown by Ramos and co-workers, Cu 2 O powder can be successfully reduced to metal after 120 min of heating in a hydrogen atmosphere at 673 K and 5.3 hPa [13].In contrast, Ramos and colleagues showed that a combination of a glow discharge hydrogen …

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Copper oxide/reduced graphene oxide composites for improving …

Copper oxide has attracted much attention in the field of anode materials for lithium-ion batteries because of its high capacity. However, in the long-term cyclic charge and discharge, due to the volume change, the electrode material is powdered, resulting in the rapid attenuation of capacity. In this paper, reduced graphene oxide is added to alleviate the volume …

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Oxidation on copper wire in outlet boxes

The copper oxide on wire is normally thin, since it's exposure t oxygen is usually short term. Longer exposure time with oxygen and temperature will increase it's thickness. Most applications, I really doubt would have a problem, since most connections scrape off or puncture through the oxide. But, I would have to believe that pressure plates ...

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Synthesis and in situ oxidation of copper micro- and

This work presents a one-step controlled method for the synthesis of copper oxide nanoparticles using an arc discharge in deionized water without subsequent thermal annealing.

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Copper(II) oxide ≥99.99% | Sigma-Aldrich

Copper(I) oxide. Quick View. Supelco. 1.02761. Copper(II) oxide. Quick View. Sigma-Aldrich. 641650. Copper zinc iron oxide. Quick View. Properties. assay. ≥99.99%. SMILES string [Cu]=O. InChI. ... At a rate of 0.1 C, the cycling discharge capacity. Stable Cu₂O nanocrystals grown on functionalized graphene sheets and room temperature H₂S ...

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Electrochemical study of copper oxide and activated charcoal …

The electrochemical analysis of copper oxide-activated charcoal (CuO-AC) nanocomposite electrodes and fabricated supercapacitor cell Aare performed using cyclic voltammetry, a.c. impedance spectroscopy, and charge–discharge methods.

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Sputter deposition of copper oxide films

Copper oxide thin films are grown by reactive magnetron sputter deposition.To define the parameter space to obtain CuO films, the influence of the oxygen partial pressure, the total pressure, and the discharge current was investigated on the phase formation.A clear change from pure copper, over cuprite (Cu 2 O), and paramelaconite (Cu 4 O 3) to tenorite (CuO) thin …

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Evolution of Dispersed Systems of Metal Oxide Nanoparticles …

Abstract In this work, nanoparticles of aluminum, copper, and titanium oxides were obtained by plasma discharge in the liquid phase (ethylene glycol, water) under the influence of intense ultrasound. Particular procedures have been developed for creating sedimentation-stable aqueous dispersed systems of nanoparticles of copper(II), aluminum, and titanium(IV) oxides. …

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The reduction of copper oxide thin films with hydrogen

Abstract. The reduction of copper oxide thin films by a hydrogen plasma generated by an atmospheric-pressure glow (APG) discharge was investigated.

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