• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/042/05/0223

    • Keywords

       

      Hydrothermal synthesis; Sr-doped ZnS nanoparticles; photocatalysis.

    • Abstract

       

      Strontium-doped ZnS nanoparticles (NPs) (1.5, 5 and 9 wt%) were synthesized through a surfactant free hydrothermal method. The structural characterization by X-ray diffraction confirms the synthesis of ZnS, with its twocrystalline phases (cubic and hexagonal), without apparition of any peaks related to Sr phases. The crystallite size is affected by Sr doping concentration and was estimated in the range of 2.24–2.51 nm. Furthermore, transmission electron microscopy images show that the NPs have great tendency to aggregate into spherical shapes. Spectroscopy analysis revealed vibration modes specific to ZnS materials on the Raman spectra at about 260 and 345 cm$^{−1}$ and on Fourier-transform infrared spectra at 668.9 cm$^{−1}$. Electronic investigation performed by UV–Visible diffuse reflectance spectroscopy showed that thesynthesized ZnS NPs are optically transparent in the visible domain and their band gap energy decreases from 3.42 to 3.38 eV with increasing Sr concentration. Finally, the methyl orange degradation rate increases with Sr concentration, revealing an improvement in the photocatalytic properties of Sr-doped ZnS NPs.

    • Author Affiliations

       

      R BOULKROUNE1 M SEBAIS1 Y MESSAI2 R BOURZAMI3 M SCHMUTZ4 C BLANCK4 O HALIMI1 B BOUDINE1

      1. Laboratory of Crystallography, Department of Physics, Mentouri Brothers University Constantine 1, Constantine 25000, Algeria
      2. Laboratoire d’Etude des Surfaces et Interfaces de la Matière Solide (LESIMS), Université Badji Mokhtar, Annaba 23000, Algeria
      3. Emerging Materials Research Unit, Ferhat Abbas University Sétif 1, Sétif 19000, Algeria
      4. CNRS, Institut Charles Sadron, Université de Strasbourg, 23 rue du Loess, BP 84047, 67034 Strasbourg Cedex 2, France
    • Dates

       
    • Supplementary Material

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.