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Nitrogen-doped ZnWO4 nanophotocatalyst: synthesis, characterization and photodegradation of methylene blue under visible light

  • Mahbobeh Rahmani
  • Tahereh SedaghatEmail author
Article
  • 16 Downloads

Abstract

Nitrogen-doped ZnWO4 nanoparticles have been synthesized by a sol–gel method using sodium tungstate and zinc acetate in the presence of urea to supply nitrogen. This photocatalyst was characterized by X-Ray diffraction (XRD), field emission-scanning electron microscopy (FESEM), transmission electron microscopy (TEM), an energy dispersive X-ray spectrometer (EDS), the Brunauer–Emmett–Teller technique (BET), photoluminescence (PL) spectroscopy and UV–vis diffuse–reflectance spectrum (DRS). The band gap energy of N-doped ZnWO4 was about 2.99 eV and the absorption wavelength shifted to the visible region in comparison to pure ZnWO4. Also, N-doped catalyst shows enhanced photocatalytic activity for the degradation of methylene blue (MB). The apparent photodegradation rate constant (k) of N-doped ZnWO4 was observed 3.57 × 10−2 min−1 under visible light irradiation.

Keywords

ZnWO4 Nitrogen doping Photocatalyst Methylene blue 

Notes

Acknowledgements

Support of this work by Shahid Chamran University of Ahvaz, Iran (Grant No. 1397) is gratefully acknowledged.

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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Chemistry, Faculty of ScienceShahid Chamran University of AhvazAhvazIran

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