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 discharge chamber with two copper electrodes immersed in distilled water.
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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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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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The influence of a pressure of gas mixture (10 vol% O 2 + 90% N 2) on an average size of copper oxide nanoparticles, produced in the plasma of low pressure arc discharge, has been studied as a basic process variable.A correlation between the dependence of average particle size on gas mixture pressure and the dependence of discharge gap voltage on product …
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(a) Complete discharge curve of a cell during overdischarge at 58 mΩ; markers show the points at which the discharge was stopped and the electrolyte was removed; (b) voltage curve of the cells ...
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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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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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Keywords: copper oxide, arc discharge, dielectric permittivity, electrical conductivity DOI: 10.1134/S0020168523070075 INTRODUCTION CuO is a p-type semiconductor with high …
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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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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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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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Copper oxide/reduced graphene oxide composites for improving long-term cyclic charge and discharge of high-capacity lithium-ion batteries Zhou Jiang1, Haidong Yu1, Xuebin Zhou1, Yong Li1,*, and Ying Wang1 1Jiangxi University of Science and Technology School of Materials and Chemical Engineering, Ganzhou 341000, China
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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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A conventional glow discharge was engaged in conducting a process of plasma-enhanced synthesis of 2D CuO nanostructures on a copper sample installed on a cathode exposed to oxidation for 30 min at ...
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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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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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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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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 discharge chamber with two copper electrodes immersed in distilled water. The effect of distance between electrodes on …
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A noteworthy feature is the tunability of its bandgap, which can be either direct (2 eV-4 eV) or indirect (1 eV-1.4 eV) depending on the conditions (e. g. presence of surface and/or defect states ...
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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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Study with Quizlet and memorize flashcards containing terms like What is unique about the internal discharge-temperature safety devices in some scroll compressors? A. They are set to open at a cooler temperature than the external overload B. The excessive pressure is vented to the atmosphere C. Once activated, they can never operate again D. Some are actually valves …
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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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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 oxides are low cost, earth abundant materials with potential applications in a wide variety of fields, especially since Cu 2 O and CuO exhibit p-type conductivity. 1 Specifically, CuO has a bandgap of 1.4 eV, 2 making it useful for applications in electrocatalysis, 3 gas sensors, 4 and high-T c superconductors, 5 while Cu 2 O, with a bandgap of 2.1 eV, is an …
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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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Copper oxide nanoparticles (CuO NPs) are widely applied in various products, including food, cosmetic, biomedical, and environmental goods. Despite their broad use, potential risks are still associated with these NPs, therefore, the aim of this study is to delve deeper into the cytotoxic effects of 85 nm CuO NPs on kidney MDCK and liver AML-12 cells, representing cell …
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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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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 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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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.
→ WhatsApp: +86 18221755073
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