Synthesis and systematic investigations of Al and Cu-doped ZnO nanoparticles and its structural, optical and photo-catalytic properties

Kumaresan, S.; Vallalperuman, K.; Sathishkumar, S.; Karthik, M.; Sivakarthik, P.

doi:10.1007/s10854-017-6654-7

Cited by 28 publications

(7 citation statements)

References 25 publications

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“…5c). The decrease in Eg has also been observed by other authors when doping ZnO with Cu [29,41], and is explained by the exchange interactions at the p-d orbitals (3d Zn and 2p O to 3d Cu and 2p O) during the introduction of copper ions in the ZnO lattice [46,50,51]. Additionally, the significant difference in electronegativity between Zn (1.65) and Cu (1.95) atoms may also be a reason for the reduction of the band-gap [52].…”

Section: Optical Propertiessupporting

confidence: 71%

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

Nouasria

Selloum

Henni

et al. 2021

Ceramics International

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Section: Optical Propertiessupporting

confidence: 71%

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

Nouasria

Selloum

Henni

et al. 2021

Ceramics International

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“…Among metal oxide nanoparticles zinc oxide nanoparticles are most promising materials having diversified applications due its remarkable chemical properties like photo-stability, chemical stability, and broad range of radiation adsorption [9]. Some of the properties of intrinsic zinc oxide nanoparticles can be enhanced by using suitable dopants, among which transition metals are most widely used for improving the property of ZnO nanoparticles [10][11][12][13]. Several attempts are also made to synthesis transition metal doped ZnO nanoparticles such as hydrothermal process [14], ball milling method [15], solid state reaction method [16], and co-precipitation method [17].Various researchers have reported the enhanced properties like band gap, optical, electrical and magnetic properties of ZnO nanoparticles doped with transition metals.…”

Section: Introductionmentioning

confidence: 99%

STRUCTURAL, MORPHOLOGICAL AND OPTICAL PERFORMANCE OF SYNTHESIZED Co, Mn/ZnO NANOCOMPOSITES

Rathidevi¹,

Velmani²,

Tamilselvi³

2020

JOR

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The pure Zinc Oxide, Cobalt doped Zinc Oxide and Manganese doped Zinc oxide nanoparticles were synthesized using Co-precipitation method. This work aims to study the effect of doping on the structural, morphological, and optical properties of the synthesized pure and doped ZnO nanoparticles. The structural and morphological change of the nanoparticles were examined by using X-ray Diffraction analysis (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The elemental analysis was studied with Energy Dispersive X-ray analysis (EDAX). The optical property of the particles were analysed using UV-Visible Spectroscopy (UV) and Photoluminescence Spectroscopy (PL). The XRD results shows all the nanoparticles are crystalline and pure in nature. The doping effect found to decrease the particle size of the ZnO nanoparticles. The SEM images also show the doping has significant change on the morphology of the ZnO nanoparticles. The functional groups present in the nanoparticles were confirmed using Fourier Transform Infrared Spectroscopy. The optical property of UV-Vis spectrum shows red shift and the band gap also found to decrease for doped nanoparticles. The presence of dopants in the nanoparticles was confirmed with the EDAX spectrum. The results of above characterization techniques confirmed the doping has significant influence on the structure, morphology, and optical property of the ZnO nanoparticles.

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“…Substitution of TM ions such as Fe, Co, Mn, Ni and Cu can significantly tailored the electrical and semimagnetic properties of ZnO nanostructures due their high electrical conductivity and magnetic moments. [9][10][11][12] Literature reports proven that the doping of Co 2+ ions in zinc oxides significantly changes the physico-chemical properties and enhances the anti-bacterial activities. [13][14][15] Numerous synthesis approaches have been developed for the fabrication of ZnO nanoparticles which includes both physical and chemical methods.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structural, Magnetic, Dielectric and Optical Properties of Co Doped Cr-Zn Oxide Nanoparticles for Spintronic Devices

Balsure¹,

More²,

Kadam³

et al. 2022

Eng. Sci.

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Dilute magnetic semiconductor (DMS) nanoparticles of Co doped Zn0.95Cr0.05O were synthesized by sol-gel auto-combustion technique. Crystallographic analysis was made by using X-ray diffraction (XRD) technique. Rietveld refined X-ray diffraction patterns confirm the single phase wurtzite type crystal structure with space group p63mc. Replacement of larger Zn 2+ ions by smaller Co 2+ reduces the lattice parameters 'a' and 'c'. Average crystallite estimated from Scherrer equation is found increasing from 17.6 to 22.0 nm with the addition of Co 2+ ions.Scanning electron micrographs (SEM) were used to understand the surface morphology of the samples. Average grain size obtained from SEM analysis is observed in the range 22.1 to 26.5 nm. Enriched ferromagnetism is observed for Co 2+ doped samples and the saturation magnetization increases from 0.0514 to 0.1026 emu/gm. At lower frequency region both dielectric constant () and dielectric loss tangent (tan ) have higher values and decreases with increasing frequency and becomes almost constant at higher frequency region. Energy band gap (Eg) is decreases from 3.26 to 2.69 eV with the addition of Co 2+ ions in Zn-Cr oxides. Enriched ferromagnetism and higher dielectric constant at low frequency make these materials suitable for spintronic devices.

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Synthesis and systematic investigations of Al and Cu-doped ZnO nanoparticles and its structural, optical and photo-catalytic properties

Cited by 28 publications

References 25 publications

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

Gradient doping of Cu(I) and Cu(II) in ZnO nanorod photoanode by electrochemical deposition for enhanced photocurrent generation

STRUCTURAL, MORPHOLOGICAL AND OPTICAL PERFORMANCE OF SYNTHESIZED Co, Mn/ZnO NANOCOMPOSITES

Synthesis, Structural, Magnetic, Dielectric and Optical Properties of Co Doped Cr-Zn Oxide Nanoparticles for Spintronic Devices

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