Photodegradation of Antibiotic by Un-doped and Cu2+ Doped ZnS Quantum Dots/MWCNTs: Structural, Optical, Photoluminescence Studies

  • Mohammad Reza Khamis Abadi
  • Alireza FeizbakhshEmail author
  • Homayon Ahmad Panahi
  • Elaheh Konoz


In this project, Cu2+ doped on ZnS quantum dots (QDs)/MWCNTs nanocomposites and undoped samples were provided by chemical method and several techniques by photoluminescence (PL) spectroscopy, X-ray diffraction powder (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy with field emission (FESEM), Energy dispersive X-ray (EDS), Dynamic light scattering (DLS), thermogravimetric analysis (TGA) and UV–vis spectra used to characterization of materials. The band-gap of the ZnS QDs, ZnS QDs/MWCNTs, Cu-ZnS QDs/MWCNTs (2:1), Cu-ZnS QDs/MWCNTs (1:1) and Cu-ZnS QDs/MWCNTs (2:1) were 3.20, 3.05, 2.90, 2.85, and 2.80 eV, respectively. The photocatalytic activity of ZnS QDs/MWCNTs nanocomposites and Cu2+ doped ZnS QDs/MWCNTs nanocomposites were tested with Erythromycin drug compound, which is a member of the macrolide antibiotic family. The morphological and structural studies revealed that the nano products were decorated on MWCNTs. The photocatalytic results revealed that the Cu2+ doping raised the photocatalytic performances of ZnS QDs/MWCNTs nanocomposites and could be used as nano photocatalyst for decomposition of environmental pollutant compound. The optimum condition for the photocatalysis process was found pH: 6.5, catalyst dosage: 0.01 g and time: 90 min.


Cu2+ doped ZnS QDs: Photoluminescence Photocatalytic degradation 



The authors thank the Islamic Azad University Central Tehran branch for providing the facility to carry out our research.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Mohammad Reza Khamis Abadi
    • 1
  • Alireza Feizbakhsh
    • 1
    Email author
  • Homayon Ahmad Panahi
    • 1
  • Elaheh Konoz
    • 1
  1. 1.Department of Chemistry, Central Tehran BranchIslamic Azad UniversityTehranIran

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