Influence of pH on the morphology and photocatalytic activity of CuO obtained by the sonochemical method using different surfactants

Neto, N. F. Andrade; Oliveira, P.M.; Nascimento, Rubens Maribondo do; Paskocimas, C. A.; Bomio, M. R. D.; Motta, F. V.

doi:10.1016/j.ceramint.2018.09.224

Cited by 28 publications

(2 citation statements)

References 53 publications

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“…2 depicts the typical FTIR spectra of CuO in the spectral region from 400 to 4000 cm -1 . The band appeared in the range between 400 and 650 cm -1 can be assigned to the bond formation of Cu-O stretching vibration [4,21,22]. In the present case, precipitated CuO exhibits the characteristic vibrational modes at 453 and 569 cm -1 , whereby a sharp and a very strong peak is observed centered at 453 cm -1 , which corresponds to the characteristic vibrational modes of Cu-O stretching along the (002) direction [9,14].…”

Section: Resultssupporting

confidence: 48%

Structural and Morphological Characterization of CuO Nanostructure Precipitated by Water-soluble Copper (II) Nitrate Hemi(pentahydrate) and NaOH as Reactants

Anuar¹,

Cui²

2021

J. Nano- Electron. Phys.

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Section: Resultssupporting

confidence: 48%

Structural and Morphological Characterization of CuO Nanostructure Precipitated by Water-soluble Copper (II) Nitrate Hemi(pentahydrate) and NaOH as Reactants

Anuar¹,

Cui²

2021

J. Nano- Electron. Phys.

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“…The fact that CuO−ZnO hybrid nanocomposite has a higher absorption band located in the UV range is probably its most visible property. The major absorption band created by these transitions is at 325 nm [55–57] …”

Section: Resultsmentioning

confidence: 99%

Bimetallic CuO−ZnO Hybrid Nanocomposite Materials for Efficient Remediation of Environmental Pollutants

Rudresha

Hussain

Ravikumar³

et al. 2023

ChemistrySelect

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Pure CuO and 2‐Dimentional CuO−ZnO nanocomposites (NCs) were effectively prepared by an ultrasound‐assisted probe sonication route for different ratios of CuO and ZnO, and the multifunctional properties were investigated by the application of the advanced methods. XRD (X‐ray diffraction) patterns revealed a crystallite size (D) range of 25 to 31 nm for pure CuO and CuO−ZnO NCs. According to calculations, the energy band gap value (Eg) for the NCs is between 2.15 and 2.48 eV. Under UV light irradiation, the photocatalytic degradation of pure CuO and CuO−ZnO NCs on Direct Green (DG) and Fast Blue (FB) dyes was assessed. 60 mg of the catalyst was added to 20 ppm solutions of DG and FB dye. The stock solution of the dyes was prepared 10, 15, 20 and 25 ppm of 250 ml dye solution. Electrochemical analysis using cyclic voltammetry revealed improved redox potential output in the electrode crafted with graphite powder in 0.1 N HCl electrolyte solution. These NCs were used because of their capacity to detect an extremely dangerous chemical like arsenic. The constructed electrode‘s lowest limit of detection was determined to be 110–3 mol/L. In general, vertical linearity was seen in all of the prepared nano‐electrodes, especially above 150 ohms with real axis for pure CuO but beyond 100 ohms for doped electrodes. Based on our study, we conclude that the CuO and ZnO NCs, containing 10 % of ZnO, were the most effective photocatalyst for DG and FB dyes and electrochemical sensor for Arsenic.

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Photoelectrochemical Water‐Splitting Using CuO‐Based Electrodes for Hydrogen Production: A Review

et al. 2021

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The cost‐effective, robust, and efficient electrocatalysts for photoelectrochemical (PEC) water‐splitting has been extensively studied over the past decade to address a solution for the energy crisis. The interesting physicochemical properties of CuO have introduced this promising photocathodic material among the few photocatalysts with a narrow bandgap. This photocatalyst has a high activity for the PEC hydrogen evolution reaction (HER) under simulated sunlight irradiation. Here, the recent advancements of CuO‐based photoelectrodes, including undoped CuO, doped CuO, and CuO composites, in the PEC water‐splitting field, are comprehensively studied. Moreover, the synthesis methods, characterization, and fundamental factors of each classification are discussed in detail. Apart from the exclusive characteristics of CuO‐based photoelectrodes, the PEC properties of CuO/2D materials, as groups of the growing nanocomposites in photocurrent‐generating devices, are discussed in separate sections. Regarding the particular attention paid to the CuO heterostructure photocathodes, the PEC water splitting application is reviewed and the properties of each group such as electronic structures, defects, bandgap, and hierarchical structures are critically assessed.

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Influence of pH on the morphology and photocatalytic activity of CuO obtained by the sonochemical method using different surfactants

Cited by 28 publications

References 53 publications

Structural and Morphological Characterization of CuO Nanostructure Precipitated by Water-soluble Copper (II) Nitrate Hemi(pentahydrate) and NaOH as Reactants

Structural and Morphological Characterization of CuO Nanostructure Precipitated by Water-soluble Copper (II) Nitrate Hemi(pentahydrate) and NaOH as Reactants

Bimetallic CuO−ZnO Hybrid Nanocomposite Materials for Efficient Remediation of Environmental Pollutants

Photoelectrochemical Water‐Splitting Using CuO‐Based Electrodes for Hydrogen Production: A Review

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