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Synthesis of Mg2+-doped ZnO nanocomposites via sol–gel and their structural and optical properties

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Abstract

Pure, Mg-doped ZnO and MgZnO alloy nanocomposites were synthesized via sol–gel process. Mg2+ was introduced as a dopant in the prepared samples at concentrations of 0, 0.01, 0.05 and 0.1 g. X-rays diffraction results checked the crystallographic nature and phase purity of the synthesized materials. Fourier Transform Infrared and UV–visible spectroscopy were employed to study the structural and optical properties of the samples. The particles sizes were calculated using Scherrer’s equation and found to be almost 20 nm. The energy band gap (Eopt) of ZnO increased (from 3.94 to 4.09 eV) with doping for direct transitions and ranged between 4.28 and 4.32 eV for indirect transitions. However, direct and indirect Eopt were 4.05 and 4.29 eV, respectively, for MgZnO alloy. In the same time, Urbach energy values were found within the range of 0.19–0.29 eV and 0.19 eV for MgZnO alloy. Results of the structural and optical properties can help increase utilization of the correct form of magnesium-doped ZnO in different applications in industry.

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Authors and Affiliations

  1. Physical Engineering Laboratory, Faculty of Matter Sciences, University of Tiaret, 14000, Tiaret, Algeria

    Ahmed Kadari & Ikram Zohra Chikhi

  2. Department of Physics, Faculty of Science, Menoufia University, Shebin El-Kom, 32511, Egypt

    Intesar A. El-Mesady

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  1. Ahmed Kadari
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  2. Ikram Zohra Chikhi
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  3. Intesar A. El-Mesady
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Contributions

AK contributed to methodology, data curation, writing—review and editing. IAE-M contributed to data curation, writing—review and editing. IZC contributed to methodology.

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Correspondence to Ahmed Kadari.

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Kadari, A., Chikhi, I.Z. & El-Mesady, I.A. Synthesis of Mg2+-doped ZnO nanocomposites via sol–gel and their structural and optical properties. J Mater Sci: Mater Electron 33, 27102–27109 (2022). https://doi.org/10.1007/s10854-022-09372-6

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  • DOI: https://doi.org/10.1007/s10854-022-09372-6

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