Pure and Cu-Doped ZnO Nanoparticles: Hydrothermal Synthesis, Structural, and Optical Properties

Saad, Laila; Soltane, L.; Sediri, F.

doi:10.1134/s0036024419130259

Cited by 29 publications

(2 citation statements)

References 34 publications

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“…Zn-O stretching phase was identified by the presence of sharp peaks about 425 and 575 cm −1 [38]. Additionally, the band observed at 750 cm −1 belongs to Cu-O stretching vibration [39]. In the region between 1400 to 1800 cm −1 some other important transmission peaks were observed which occurred due to the vibrations of C=C and C=O bonds [39][40][41].…”

Section: Ft-ir Spectra Analysismentioning

confidence: 98%

Enhancement in photo sensing and photocatalytic degradation activity of Cu doped ZnO nanoparticles prepared by co-precipitation method

Ganesh,

Yahia,

Raj

et al. 2023

Phys. Scr.

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In the present work, Copper (Cu) doped zinc oxide (ZnO) nanoparticles were prepared using a simple and cost-effective co-precipitation process. The objectives of the proposed work are to identify the cause of Cu dopant on the crystalline structure, morphology, optical characteristics of ZnO nanoparticles for photocatalytic as well as photosensing applications. X-ray diffraction (XRD) and Field emission scanning electron microscope (FESEM) examinations were used to identify the crystal structure and morphology of the prepared samples. The crystallite size of the undoped ZnO sample was 44 nm, which gets reduced to 36 nm with 5% Cu-doping. Using diffuse reflectance spectroscopy (DRS), the band gap of prepared samples of undoped to 5wt% Cu doped ZnO was calculated, and it was found to be reduced from 3.31 to 3.26 eV. Photoluminescence (PL) spectra show a decrease in luminous intensity which is in line with the photocatalytic behavior. 5 wt% Cu doped ZnO sample displayed maximum degradation efficiency of 85% in 75 minutes and degradation rate of 0.02 min-1. Additionally, photo-sensing studies of the 5 wt. % Cu doped ZnO sample showed higher responsivity (R), detectivity (D*) and external quantum efficiency (EQE) values of 1.93  10-1 AW-1, 1.09  1011 Jones and 45 % respectively. The rise and fall time of 5 wt % Cu doped ZnO photodetector is in the order of 0.3 and 0.5 s.

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Section: Ft-ir Spectra Analysismentioning

confidence: 98%

Enhancement in photo sensing and photocatalytic degradation activity of Cu doped ZnO nanoparticles prepared by co-precipitation method

Ganesh,

Yahia,

Raj

et al. 2023

Phys. Scr.

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“…In the quest to synthesize ZnO and transition metal doped ZnO, researchers have developed a range of techniques, including hydrothermal [17], sol-gel [18], chemical vapour deposition [19], co-precipitation [20,21], magnetron sputtering [22], ball milling [23], and many more. Each method brings its own set of advantages and limitations, making it a matter of careful consideration to determine the best approach for a given situation.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Roy,

Mukherjee

2023

Phys. Scr.

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In the current article, we investigated the impact of transition metal Co2+ doping in ZnO nanoparticles and its effect on their optical, structural, and magnetic properties. The synthesized nanoparticles have the generic formula Zn1-xCoxO (x = 0.00, 0.03, 0.06, and 0.09). Single-phase hexagonal crystal structure of the synthesized nanopowder was confirmed by X-ray diffractograms. Tauc plots were used to calculate the band gap of all the samples. Multiple emission peaks were observed from the photoluminescence studies. HRTEM was employed to study the particle morphology and the size distribution. X-ray photoelectron (XPS) spectroscopy was performed to investigate the chemical composition of samples. Magnetic measurements were carried out to study the magnetic behaviour of pure and doped ZnO samples. Ferromagnetic behaviour became more prominent with the addition of Co doping, as observed by room temperature M-H plots.

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Enhanced Dye Removal and Antibacterial Efficacy of Copper‐Doped ZnO Nanoparticles on Cellulose Nanofibers

Nguyen,

Tran,

et al. 2024

Adv Materials Inter

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Cu‐doped ZnO nanoparticle‐loaded cellulose nanofiber membranes are investigated for their potential photocatalytic and antibacterial properties. ZnO nanoparticles, both undoped and doped with copper, are synthesized by the co‐precipitation process, afterward immobilized onto cellulose nanofibers through the utilization of a dip‐coating technique. Methylene blue (MB) removal is evaluated to inspect the effectiveness of photocatalysts in both UV and Xenon lighting conditions. The morphology and structure of the composite cellulose nanofibers loaded with photocatalysts are then examined using FE‐SEM, TEM, XRD, FTIR, and UV–vis characterizations. Under visible light, the self‐cleaning effects of organic compounds are measured, presenting more than 50% of discoloration for various organic stains. The antibacterial activity is assessed using the Kirby–Bauer disc diffusion method and the plate counting method against the gram‐positive Staphylococcus aureus (S. aureus) and gram‐negative Escherichia coli (E. coli) bacteria. The current study shows that cellulose nanofibers coated with Cu‐doped ZnO nanoparticles exhibited excellent photocatalytic and antibacterial activities.

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Pure and Cu-Doped ZnO Nanoparticles: Hydrothermal Synthesis, Structural, and Optical Properties

Cited by 29 publications

References 34 publications

Enhancement in photo sensing and photocatalytic degradation activity of Cu doped ZnO nanoparticles prepared by co-precipitation method

Enhancement in photo sensing and photocatalytic degradation activity of Cu doped ZnO nanoparticles prepared by co-precipitation method

Investigation on the impact of cobalt doping on optical, structural and magnetic properties of zinc oxide nanoparticles

Enhanced Dye Removal and Antibacterial Efficacy of Copper‐Doped ZnO Nanoparticles on Cellulose Nanofibers

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