Optical and magnetic investigation of Cu doped ZnO nanoparticles synthesized by solid state method

Vasudevan, J.; Jeyakumar, S. Johnson; Arunkumar, B.; Jothibas, M.; Muthuvel, A.; Vijayalakshmi, S.

doi:10.1016/j.matpr.2020.12.429

Cited by 19 publications

(5 citation statements)

References 19 publications

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“…The peak could be related to CuO, which is consistence with literature report [ 51 ]. However, in Cu-ZnO (1–4%), the peaks were very small and insignificant as compared to Cu-ZnO/(5%) catalysts due to the smaller amount of CuO in the catalyst, which is also similar with the reported result [ 52 ].…”

Section: Resultssupporting

confidence: 89%

Biogenic Synthesis of Cu‐Doped ZnO Photocatalyst for the Removal of Organic Dye

Lemecho

Sabir

Andoshe

et al. 2022

Bioinorganic Chemistry and Applications

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The Cu-doped ZnO photocatalysts were prepared with a green and coprecipitation approach by using water hyacinth (Eichhornia crassipes) aquatic plant extract. In the preparation process, different amount of copper precursors such as 1, 2, 3, 4, and 5% of molar ratio were added to zinc nitrate precursors and abbreviated as Cu-ZnO (1%), Cu-ZnO (2%), Cu-ZnO (3%), Cu-ZnO (4%), and Cu-ZnO (5%), respectively. The characterization of the obtained samples was carried out, and the removal of the methylene blue (MB) dye was examined. Out of all catalysts, Cu-ZnO (3%) had the best photocatalytic performance and 89% of the MB dye was degraded. However, the degradation performances of blank (without catalysts), ZnO, Cu-ZnO (1%), Cu-ZnO (2%), Cu-ZnO (4%), and Cu-ZnO (5%) catalysts were 6, 54, 69, 83, 80, and 73%, respectively. Therefore, the use of water hyacinth plant extract with the optimum amount of Cu added to ZnO during the preparation of the catalyst could have a promising application in the degradation of organic pollutants.

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Section: Resultssupporting

confidence: 89%

Biogenic Synthesis of Cu‐Doped ZnO Photocatalyst for the Removal of Organic Dye

Lemecho

Sabir

Andoshe

et al. 2022

Bioinorganic Chemistry and Applications

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“…2b. These peaks indicate the presence of copper which is consistent with the previous work [65,66]. Also the intensity of the peaks for the Cu-doped ZnO was decreased when compared with that of the undoped ZnO catalyst.…”

Section: Crystallographic Analysissupporting

confidence: 91%

Visible Light Induced Photocatalytic Removal of Methylene Blue Using Cu-tunable p-type ZnO Nanoparticles.

MUHAMMAD,

SULAİMAN KABO,

YUSHAU

2023

Journal of Physical Chemistry and Functional Materials

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Removal of phototoxicity and zootoxicity pollutants from the aqueous environment is of great importance to human and aquatic life. Copper-tunable p-type zinc oxide (Cu-ZnO) photocatalysts have been prepared by the chemical co-precipitation method. The structural, morphological, elemental and optical properties of the obtained catalysts were characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray (EDX) analysis and ultraviolet-visible (UV-Vis) spectrophotometry. The diffraction patterns of the as-synthesized catalysts were matched with that of the hexagonal wurtzite structure for the standard ZnO nanoparticles. The photocatalytic activity of the prepared Cu-doped ZnO catalyst was evaluated using methylene blue (MB) dye under various conditions. The effect of operational parameters such as MB initial concentration, catalyst dosage, and solution pH was optimized using a face central composite design (FCCD) of the response surface methodology (RSM). The optimum photodegradation efficiency of 98.00% was found at 0.30g/L catalyst dose, 10.00mg/L initial concentration of MB and initial pH at 6.00. The degradation model was statistically remarkable with p < 0.0001% in which the MB initial concentration and solution pH were the most significant variables influencing the removal of MB over the Cu tunable p-type ZnO photocatalyst under visible light irradiation. Finally, the photocatalytic degradation of MB using the undoped and Cu-doped ZnO nanoparticles was nicely fitted pseudo-first-order kinetics scheme.

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“…This FTIR spectrum revealed that peaks at 424, 522 and 601cm -1 has formation of CuO nanoparticles [9]. The broad peak at 3029Cm -1 is attributed to O-H stretching of moisture content [10]. The Peak obtained at 2354cm -1 has stretching vibration of O=C=O bond of carbon dioxide [11].…”

Section: Synthesis Of Copper Oxide Nanoparticles Figure 1 Schematic D...mentioning

confidence: 88%

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

Arunkumar,

Meenakshi,

Thamarai selvi

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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The optical properties of green synthesized CuO nanoparticles such as absorption coefficient, refractive index, band gap, dielectric constant and optical conductivity were analyzed. XRD shows that upon temperature treatment of green CuO nanoparticles, the crystal size increases and thus the crystallinity increases due to the decrease in the number of crystals per unit area. Due to the high crystallinity, the absorption coefficient exhibits a high electronic shift and the refractive index exhibits good polarization of the ions. Thus the dielectric constant of the real and imaginary regions decreases as the photon energy increases. Higher temperatures exhibit higher photon energy levels. Optical conductivity has induced electron annihilation due to the absorption coefficient of increased photo energy light; Hence the optical conductivity analysis of Lantana camara capped CuO nanoparticles indicated the stability of electrical conductivity with increase in photo power.

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Optical and magnetic investigation of Cu doped ZnO nanoparticles synthesized by solid state method

Cited by 19 publications

References 19 publications

Biogenic Synthesis of Cu‐Doped ZnO Photocatalyst for the Removal of Organic Dye

Biogenic Synthesis of Cu‐Doped ZnO Photocatalyst for the Removal of Organic Dye

Visible Light Induced Photocatalytic Removal of Methylene Blue Using Cu-tunable p-type ZnO Nanoparticles.

Optical Conductivity Analysis of Green CuO Nanoparticles Using Plant Leaf Extract

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