Sputtering based synthesis of CuO nanoparticles and their structural, thermal and optical studies

Verma, Monu; Kumar, Vinod; Katoch, Akash

doi:10.1016/j.mssp.2017.12.018

Cited by 70 publications

(22 citation statements)

References 31 publications

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“…That is no other crystalline forms of copper oxide were presented, indicating that copper existed in CuO crystal form after calcination at 450°C. This result agreed with previously reported studies [16, 20, 27].…”

Section: Resultssupporting

confidence: 94%

“…The morphological aspects of samples and the crystalline of copper oxides were characterised by SEM (Philips XL30) and XRD (Bruker D8) techniques. The crystallite size ( D ) of the samples was calculated from the line broadening of the diffraction peak using the Debye–Scherrer equation [16, 27]

D = \frac{K \cdot λ}{β \cdot \cos false(θ false)}

where λ is the wavelength of Cukα, 1.54056 Å, β is the full width at half maximum intensity of the peak in radian, θ is the diffraction angle and K is the Sherrer constant (0.89) [27].…”

Section: Methodsmentioning

confidence: 99%

“…The morphological aspects of samples and the crystalline of copper oxides were characterised by SEM (Philips XL30) and XRD (Bruker D8) techniques. The crystallite size (D) of the samples was calculated from the line broadening of the diffraction peak using the Debye-Scherrer equation [16,27]…”

Section: Characterisationsmentioning

confidence: 99%

“…where λ is the wavelength of Cukα, 1.54056 Å, β is the full width at half maximum intensity of the peak in radian, θ is the diffraction angle and K is the Sherrer constant (0.89) [27]. Specific surface area of the copper oxides was measured by using a BET surface analyser (Belsorp mini II; Bel, Japan).…”

Section: Characterisationsmentioning

confidence: 99%

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Photocatalytic performance of rod‐shaped copper oxides prepared by spin coating

Koohestani

2019

Micro & Nano Letters

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Copper oxides (CuO and Cu 2 O), having narrow bandgap and a variety of chemophysical properties, are attractive in many fields such as solar cells, energy conversion, optoelectronic devices, and catalyst. In this work, these copper oxides are synthesised via co-precipitation method and spin coating and annealed in various temperatures. Then, samples are characterised by X-ray powder diffraction, scanning electron microscopy (SEM) and ultraviolet-visible light absorption spectra. From the SEM images of sample annealed at 450°C, the diameter and lengths range of the rod-shaped particles were 30-70 and 200-300 nm, respectively. Finally, to investigate the photocatalytic activity of oxides, methyl orange (MeO) degradation by copper oxides under UV irradiation was studied. Pure CuO with bandgap energy 1.37 eV and specific surface areas 91.3 m 2 /g had a greater efficiency of MeO degradation value 87.8%.

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Section: Resultssupporting

confidence: 94%

D = \frac{K \cdot λ}{β \cdot \cos false(θ false)}

where λ is the wavelength of Cukα, 1.54056 Å, β is the full width at half maximum intensity of the peak in radian, θ is the diffraction angle and K is the Sherrer constant (0.89) [27].…”

Section: Methodsmentioning

confidence: 99%

“…The morphological aspects of samples and the crystalline of copper oxides were characterised by SEM (Philips XL30) and XRD (Bruker D8) techniques. The crystallite size (D) of the samples was calculated from the line broadening of the diffraction peak using the Debye-Scherrer equation [16,27]…”

Section: Characterisationsmentioning

confidence: 99%

Section: Characterisationsmentioning

confidence: 99%

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Photocatalytic performance of rod‐shaped copper oxides prepared by spin coating

Koohestani

2019

Micro & Nano Letters

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“…and Dagher et al. . The high value of band gap may be due to simultaneous presence of Cu and CuO in the synthesized NPs as shown in Figure (c) which may influence the measured absorption coefficient.…”

Section: Resultssupporting

confidence: 66%

Solvents Effect on the Morphology and Stability of Cu/CuO Nanoparticles Synthesized at High Fluence Laser Ablation

et al. 2019

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Cu/CuO NPs were synthesized by ablating Cu target using nanosecond Nd:YAG pulsed laser operating at 1064 nm with 8 ns pulse duration in three different solvents viz: ethylene glycol (EG), deionized water (DI) and ethanol (Eth). The effects of these three solvents at high laser fluence of 40 J/cm 2 was investigated to study the stability and morphology of nanoparticles using microscopic and spectroscopic techniques. The morphology of these nanoparticles are dependent on the physical properties of solvents (like viscosity, conductivity, polarity and enthalpy) used in laser ablation. EG and DI shows tadpole and necklace like structure whereas in Eth hollow structures were observed. The crystallinity of nanoparticles were confirmed by HRTEM, SAED and XRD analysis. In all the three solvents the characteristic absorption and emission peaks of Cu and CuO nanoparticles were observed and have been elaborately discussed in this paper. In addition, the detailed growth kinematics of nanoparticles involved in the process of laser ablation technique have been highlighted.

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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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Sputtering based synthesis of CuO nanoparticles and their structural, thermal and optical studies

Cited by 70 publications

References 31 publications

Photocatalytic performance of rod‐shaped copper oxides prepared by spin coating

Photocatalytic performance of rod‐shaped copper oxides prepared by spin coating

Solvents Effect on the Morphology and Stability of Cu/CuO Nanoparticles Synthesized at High Fluence Laser Ablation

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

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