UV–Visible light induced photocatalytic studies of Cu doped ZnO nanoparticles prepared by co-precipitation method

Mittal, Manish; Sharma, Manoj; Pandey, O.P.

doi:10.1016/j.solener.2014.09.026

Cited by 201 publications

(57 citation statements)

References 33 publications

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“…Changes in the absorption peaks, due to doping, showed changes in the band structure. The shift of the absorption edge represented the change in the particle energy gap 44 . The optical energy gap of the nanoparticles was obtained from drawing the graph of (Ahν) 2 versus energy, according…”

Section: Optical Studiesmentioning

confidence: 99%

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Hosseini

Sarsari

Kameli

et al. 2015

Journal of Alloys and Compounds

261

124

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Silver-doped ZnO nanoparticles were successfully fabricated at 400• C via a simple and rapid method based on short time solid state milling and calcination of precursor powders. The effect of Ag dilute doping on the structural, optical, and photocatalytic properties of ZnO nanoparticles was investigated by X-ray diffraction (XRD), UV-vis spectrophotometer and photoluminescence (PL) spectroscopy. X-ray analysis revealed that Ag doped ZnO solidified in hexagonal wurtzite structure. The intensity of deep level emission was reduced with increasing silver doping in PL measurement. The X-ray photoelectron spectroscopy (XPS) measurement predicted that Ag was mainly in the metallic state and ZnO was in the wurtzite structure. This metallic state accompanied by unique zinc oxide properties decolorized the methyl violet, efficiently. The first-principles calculation represented Ag deep level in ZnO with an n-type behavior, while in ZnO structure with grain boundary p-type nature via shallow states is dominant same as powder samples as studied in this present work. It was suggested that these Ag-doped ZnO nanoparticles may have good applications in optoelectronics, spintronics and wastewater treatment.

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Section: Optical Studiesmentioning

confidence: 99%

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Hosseini

Sarsari

Kameli

et al. 2015

Journal of Alloys and Compounds

261

124

View full text Add to dashboard Cite

show abstract

“…Among them, zinc oxide (ZnO) has gained more attention due to its wide direct band gap (E g = 3.37 eV) and large exciton binding energy (60 meV) at room temperature [6], which lead to the better optical [7], electrical [8,9] and chemical properties [10]. Nanostructured ZnO is the most widely studied photocatalyst for the oxidative degradation of organic pollutants present in wastewater and organic effluents [11][12][13]. ZnO has many attractive characteristics such as chemical stability, nontoxicity and low cost, but its photocatalytic efficiency is limited by a high rate of recombination of the photogenerated electron-hole pairs and the photocatalytic activity of ZnO can be improved by doping with metallic and nonmetallic species [14] or by surface functionalization [15].…”

Section: Introductionmentioning

confidence: 99%

UV-A light-induced photodegradation of Acid Blue 113 in the presence of Sm-doped ZnO nanostructures

et al. 2015

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In this report, optical and photocatalytic degradation of Acid Blue 113 (AB 113) has been investigated in an aqueous heterogeneous media containing pure and Sm-doped ZnO nanostructures which were prepared by a simple wet chemical route. X-ray diffraction measurement confirmed that the prepared nanostructures were in hexagonal wurtzite structure and the dopant Sm ion was incorporated into the Zn lattice. Interesting morphological changes involving a nanosheet-star-spherical transition were observed upon Sm doping and annealing, which were identified through transmission electron microscope. Optical absorption measurements showed an exciton absorption band and a band gap narrowing with respect to the Sm concentrations. The photodegradation of Acid Blue 113 under UV-A radiation by using pure and Sm-doped ZnO nanostructures showed that samarium played an important role in the significant improvement of the photodegradation efficiency and the optimum amount of Sm ion was found to be 1 mmol %. Further, the possible degradation mechanism was proposed herein.

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“…The peaks are observed at 362 nm (undoped ZnO) and 437 nm (Cu doped ZnO). The observed peaks are endorsed to large exciton binding energy and better optical properties of the prepared nanostructures [12]. The addition of Cu in ZnO lattice increases the absorption wavelength from 362 nm to 437 nm.…”

Section: Results and Discussion Ftirmentioning

confidence: 85%

Characterization and Antibacterial Activity of Undoped Zno and Copper Doped Zno Thin Film Prepared by Sol–gel Dip Coating Method

2017

IJAERD

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UV–Visible light induced photocatalytic studies of Cu doped ZnO nanoparticles prepared by co-precipitation method

Cited by 201 publications

References 33 publications

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

Effect of Ag doping on structural, optical, and photocatalytic properties of ZnO nanoparticles

UV-A light-induced photodegradation of Acid Blue 113 in the presence of Sm-doped ZnO nanostructures

Characterization and Antibacterial Activity of Undoped Zno and Copper Doped Zno Thin Film Prepared by Sol–gel Dip Coating Method

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