Morphologically-dependent photocatalytic and gas sensing application of Dy-doped ZnO nanoparticles

Bhatia, Sonik; Verma, Neha; Kumar, Rajesh

doi:10.1016/j.jallcom.2017.08.048

Cited by 53 publications

(11 citation statements)

References 25 publications

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“…These radicals react with organic dyes and produce CO 2 and H 2 O, so as to achieve photocatalysis [36]. The reaction processes can be understood with the following chemical equations [34][35][36][37]…”

Section: Resultsmentioning

confidence: 99%

Effects of Al doping on defect behaviors of ZnO thin film as a photocatalyst

Wang

et al. 2019

Materials Science-Poland

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Al doped ZnO (AZO) thin films were prepared on silica substrates by sol-gel method. The films showed a hexagonal wurtzite structure with a preferred orientation along c-axis. Suitable Al doping dramatically improved the crystal quality compared to the undoped ZnO films. Dependent on the Al dopant concentration, the diffraction peak of (0 0 2) plane in XRD spectra showed at first right-shifting and then left-shifting, which was attributed to the change in defect concentration induced by the Al dopant. Photocatalytic properties of the AZO film were characterized by degradation of methyl orange (MO) under simulated solar light. The transmittance of the films was enhanced by the Al doping, and the maximum transmittance of 80 % in the visible region was observed in the sample with Al concentration of 1.5 at.% (mole fraction). The film with 1.5 at.% Al doping achieved also maximum photocatalytic activity of 68.6 % under solar light. The changes in the film parameters can be attributed to the variation in defect concentration induced by different Al doping content.

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Section: Resultsmentioning

confidence: 99%

Effects of Al doping on defect behaviors of ZnO thin film as a photocatalyst

Wang

et al. 2019

Materials Science-Poland

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“…Zn is a lighter element compared to the dopants Dy and Gd. When Dy and Gd occupy Zn's position, obviously a slight change in the Zn-O vibration occurs which results a shift in peaks towards lower frequency in doped samples [33][34][35]. It could be a sign of perturbation of Zn-O-Zn system by existence of dopants.…”

Section: Influence Of Dopants On the Vibrational Spectra Of Zno Nanoparticlesmentioning

confidence: 99%

Luminescence from Zn interstitials due to combustion derived complex of Dy and Gd activated ZnO nanopowders

Kalaiezhily

Asvini

Saravanan

et al. 2018

J Mater Sci: Mater Electron

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ZnO is an II-VI compound semiconductor possessing wide, direct bandgap (3.37 eV) and high excitonic binding energy (60 meV) even at room temperature. High crystalline ZnO nanostructures show distinctive characteristics in light emission, particularly in lasing applications. Here, in this work, rare earth doping in ZnO was carried out to enhance its photoluminescence property. Pure, 2 mol% Dy doped, 2 mol% Gd doped and 1 mol% Dy and Gd co-doped ZnO nanoparticles were synthesized via easy combustion technique. The synthesized nanoparticles were characterized by X-ray diffraction, Fourier Transform Infra Red Spectroscope, Field Emission Scanning Electron Microscope, High Resolution Transmission Electron Microscope, Diffuse Reflectance Spectroscope and Photoluminescence. Enhancement of Photoluminescence in 1 mol% Dy and Gd co-doped ZnO nanoparticles is observed.

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“…Dy-doped ZnO nanoparticles using a photocatalyst were also investigated [ 9 , 10 , 11 ]. This rare earth metal (Dy) was used as an efficient dopant into the interstitial sites of the ZnO crystal structure.…”

Section: Introductionmentioning

confidence: 99%

Dy(III) Doped BiOCl Powder with Superior Highly Visible-Light-Driven Photocatalytic Activity for Rhodamine B Photodegradation

et al. 2018

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Dy-doped BiOCl powder photocatalyst was synthesized A one–step coprecipitation method. The incorporation of Dy3+ replaced partial Bi3+ in BiOCl crystal lattice system. For Rhodamine B (RhB) under visible light irradiation, 2% Dy doped BiOCl possessed highly efficient photocatalytic activity and photodegradation efficiency. The photodegradation ratio of RhB could reach 97.3% after only 30 min of photocatalytic reaction; this was more than relative investigations have reported in the last two years. The main reason was that the 4f electron shell of Dy in the BiOCl crystal lattice system can generate a special electronic shell structure that facilitated the transfer of electron from valance band to conduction band and separation of the photoinduced charge carrier. Apart from material preparation, this research is expected to provide important references for RhB photodegradation in practical applications.

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Morphologically-dependent photocatalytic and gas sensing application of Dy-doped ZnO nanoparticles

Cited by 53 publications

References 25 publications

Effects of Al doping on defect behaviors of ZnO thin film as a photocatalyst

Effects of Al doping on defect behaviors of ZnO thin film as a photocatalyst

Luminescence from Zn interstitials due to combustion derived complex of Dy and Gd activated ZnO nanopowders

Dy(III) Doped BiOCl Powder with Superior Highly Visible-Light-Driven Photocatalytic Activity for Rhodamine B Photodegradation

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