Annealing temperature investigation on electrodeposited Cu<sub>2</sub>O properties

Messaoudi, Olfa; Elgharbi, Sarra; Bougoffa, Amira; Mansouri, Moufida; Bardaoui, A.; Teka, Safa; Manai, Leila; Azhary, Arwa

doi:10.1080/01411594.2020.1837379

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…00-044-0706. 39 Previously, similar results were reported by Guzman et al 40 and Ganga et al 41 These XRD patterns do not show any impurity peak. Because of the nanosize effect, peaks are broad and wide.…”

Section: Resultssupporting

confidence: 85%

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Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

et al. 2023

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Photocatalytic degradation of dyes has been the subject of extensive study due to its low cost, eco-friendly operation, and absence of secondary pollutants. Copper oxide/graphene oxide (CuO/GO) nanocomposites are emerging as a new class of fascinating materials due to their low cost, nontoxicity, and distinctive properties such as a narrow band gap and good sunlight absorbency. In this study, copper oxide (CuO), graphene oxide (GO), and CuO/GO were synthesized successfully. X-ray diffractometer (XRD) and Fourier transform infrared (FTIR) spectroscopy confirm the oxidation and production of GO from the graphene of lead pencil. According to the morphological analysis of nanocomposites, CuO nanoparticles of sizes ≤20 nm on the GO sheets were evenly adorned and distributed. Nanocomposites of different CuO:GO ratios (1:1 up to 5:1) were applied for the photocatalytic degradation of methyl red (MR). CuO:GO(1:1) nanocomposites achieved 84% MR dye removal, while CuO:GO(5:1) nanocomposites achieved the highest value (95.48%). The thermodynamic parameters of the reaction for CuO:GO(5:1) were evaluated using the Van't Hoff equation and the activation energy was found to be 44.186 kJ/mol. The reusability test of the nanocomposites showed high stability even after seven cycles. CuO/GO catalysts can be used in the photodegradation of organic pollutants in wastewater at room temperature due to their excellent properties, simple synthesis process, and low cost.

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Section: Resultssupporting

confidence: 85%

“…The structure’s lattice parameters are a = 4.84 Å, b = 3.47 Å, and c = 5.33 Å, which agree well with the standard JCPDS card no. 00-044-0706 . Previously, similar results were reported by Guzman et al and Ganga et al These XRD patterns do not show any impurity peak.…”

Section: Resultssupporting

confidence: 82%

Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

et al. 2023

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Unraveling the Charge Storage and Activity‐Enhancing Mechanisms of Zn‐Doping Perovskite Fluorides and Engineering the Electrodes and Electrolytes for Wide‐Temperature Aqueous Supercabatteries

Jia

Ding

et al. 2021

Adv Funct Materials

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Herein, a trimetallic Ni-Co-Zn perovskite fluoride (ABF 3 ) (denoted as KNCZF) electrode material is explored for advanced aqueous supercabatteries (ASCBs), with KNCZF and activated carbon-FeBiCu@reduced graphene oxides (AC-FeBiCu@rGO) as cathode and anode, respectively, which outperform aqueous supercapacitors (ASCs) and batteries (ABs) with AC and FeBiCu@rGO anodes because of the synergistic effect of pseudocapacitive (KNCZF), capacitive (AC), and faradaic (FeBiCu@rGO) responses. One of the important findings is that the KNCZF shows a typical bulk phase conversion mechanism for charge storage in the alkaline media with the transition of ABF 3 perovskite nanocrystals into amorphous metal oxides/(oxy)hydroxides nanosheets, showing the redox-active and redox-inert roles for the Ni/Co and Zn species, respectively, which can be deduced by various ex-situ techniques. Another interesting finding is that the redox-inert Zn species largely enhance the activity of Ni/Co redox-active species in the ABF 3 materials, mainly owing to the promotion of surface electroactive sites, adsorption of OH − , and charge transfer of surface Ni/Co atoms by Zn-doping, which can be proved by ex-situ characterizations and theoretical calculations. Overall, this study reveals the structure-activity relationship and charge storage mechanisms of Zn-doping ABF 3 materials for advanced ASCBs, showing a great impact on developing advanced electrochemical energy storage.

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Correlation between different characterizations and improved electrochemical performances of cuprous oxide-based nanocrystals

2023

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Annealing temperature investigation on electrodeposited Cu₂O properties

Cited by 10 publications

References 43 publications

Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

Unraveling the Charge Storage and Activity‐Enhancing Mechanisms of Zn‐Doping Perovskite Fluorides and Engineering the Electrodes and Electrolytes for Wide‐Temperature Aqueous Supercabatteries

Correlation between different characterizations and improved electrochemical performances of cuprous oxide-based nanocrystals

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Annealing temperature investigation on electrodeposited Cu2O properties

Cited by 10 publications

References 43 publications

Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

Novel Synthesis of CuO/GO Nanocomposites and Their Photocatalytic Potential in the Degradation of Hazardous Industrial Effluents

Unraveling the Charge Storage and Activity‐Enhancing Mechanisms of Zn‐Doping Perovskite Fluorides and Engineering the Electrodes and Electrolytes for Wide‐Temperature Aqueous Supercabatteries

Correlation between different characterizations and improved electrochemical performances of cuprous oxide-based nanocrystals

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Annealing temperature investigation on electrodeposited Cu₂O properties