The Influence of Atmosphere on Electrical Property of Copper Oxide Nanoparticles

Chen, Minghan; Zhu, Huichao; Li, Xiaogan; Yu, Jun; Cai, Haiyuan; Quan, Xiaotong; Wang, Kaili; Zhang, Jiaqi

doi:10.1155/2014/461269

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Both oxides are p-type semiconducting materials with cation vacancies and electron-hole primary defects. Another compound formed by copper and oxygen is Cu

, an oxide reported as a metastable phase of Cu

O [ 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Procedure to Obtain Cu2O Isolate Films, Structural, Electrical, and Morphological Characterization, and Its Use as an Electrical Isolator to Build a New Tube Furnace

Correa

Lara

2023

Materials

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Copper oxide is a widely studied compound in wastewater decontamination, hydrogen production, solar cell production, and sensor fabrication. In recent years, many architectures and structures with the potential for developing clean technologies have been synthesized. A procedure by thermal oxidation to grow electrical insolate Cu2O films on copper surfaces in an air atmosphere was developed. The results of the morphological and structural characterization of the copper oxide layers evidence the presence of Cu2O polycrystalline films. The films have polyhedral architectures of approximately 1.4 μm thickness and are electrically insulating. A novel copper resistive furnace was built using this copper oxide film which was used as an electrical insulator between the electrical resistance of the heater and the surface of the copper thermal block. The application improves the efficiency of the resistive furnace in terms of the temperature reached and the thermal coupling response time relative to the performance of conventional furnaces using ceramic insulation. Over the entire operating temperature range explored for the same power supply, the copper oxide-coated furnace achieved higher temperatures and faster response times than the traditionally coated furnace.

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“…Both oxides are p-type semiconducting materials with cation vacancies and electron-hole primary defects. Another compound formed by copper and oxygen is Cu

, an oxide reported as a metastable phase of Cu

O [ 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Procedure to Obtain Cu2O Isolate Films, Structural, Electrical, and Morphological Characterization, and Its Use as an Electrical Isolator to Build a New Tube Furnace

Correa

Lara

2023

Materials

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“…Cuprous oxide is used in electrodes for lithium-ion batteries, photochemical cells, hydrogen production, sensors, photocatalysts, supercapacitors, magnetic storage, and water splitting [15][16][17][18][19][20][21], as well as a bactericide, colorant, and additive for corrosion-proof coatings [22][23][24]. Various methods have been developed to obtain Cu 2 O, such as the water bath method, the SILAR (Successive Ionic Layer Absorption and Reaction) method, the polyol method, chemical reduction, and sol-gel [4,10,17,[25][26][27][28][29][30][31][32]; however, some of these methods require special equipment [17,27,28], catalysts, organic additives, or expensive surfactants [25,31,32].…”

Section: Introductionmentioning

confidence: 99%

Evolution of Structural and Optical Properties of Cuprous Oxide Particles for Visible Light Absorption

Carrasco-Hernández

Ontiveros

Martínez‐Guerra

et al. 2022

Journal of Nanomaterials

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Absorbent materials are being developed to replace semiconductor materials such as p-type silicon, GaAs, CdTe, and quaternary compounds such as CIGS (copper indium gallium selenide). Cu2O is a potential candidate because it is non-toxic, inexpensive, an abundant compound in the Earth’s crust, and has good optical properties, such as a high absorption coefficient. In this work, Cu2O was obtained simply by reducing Benedict’s solution with glucose in an alkaline medium (pH 10.2 ± 0.2) at 65°C. The samples were synthesized by varying glucose content from 1 g to 7 g. The results showed a phase proportion variation between 95.56% and 99.50% of the Cu2O phase. It was found that the changes in crystallite size, microstrains, particle size, and morphology are due to reaction times, which were influenced by the use of different glucose amounts. The use of a higher glucose amount in the synthesis favors a faster reaction, forming smaller crystallites with more microstrains. Lower glucose amount leads to a slower reaction giving the crystallites more time to grow, which relaxes the microstrains. When increasing glucose content, the obtained morphologies changed from cubes, irregular cubes, prismatic spheres, cauliflower-like, to spherical shapes. The XPS spectra confirmed only the presence of chemical species such as Cu(I) and Cu(II), and chemical defects, such as oxygen vacancies (Vo), were detected in the samples. All samples presented a broad absorption range from 200 nm to 570 nm indistinctly of the morphology. The band gap showed an insignificant change from 2.04 eV to 2.09 eV when glucose was increased from 1 g to 7 g. The in-situ phase transformation study was analyzed from 25°C to 700°C. The results indicated a phase transition from Cu2O to Cu and CuO when the temperature was above 280°C.

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Synthesis and characterization of CuO-loaded macroreticular anion exchange hybrid polymer

Kociołek‐Balawejder

Stanisławska

Jacukowicz‐Sobala

2016

Reactive and Functional Polymers

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The Influence of Atmosphere on Electrical Property of Copper Oxide Nanoparticles

Cited by 5 publications

References 15 publications

Procedure to Obtain Cu2O Isolate Films, Structural, Electrical, and Morphological Characterization, and Its Use as an Electrical Isolator to Build a New Tube Furnace

Procedure to Obtain Cu2O Isolate Films, Structural, Electrical, and Morphological Characterization, and Its Use as an Electrical Isolator to Build a New Tube Furnace

Evolution of Structural and Optical Properties of Cuprous Oxide Particles for Visible Light Absorption

Synthesis and characterization of CuO-loaded macroreticular anion exchange hybrid polymer

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