Volume 14 Issue 2
Aug.  2021
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Article Navigation >  Water Science and Engineering  > 2021  >  14(2): 119-128
Mohammad Delnavaz, Javad Farahbakhsh, Seyed Sajad Mahdian. 2021: Photodegradation of reactive blue 19 dye using magnetic nanophotocatalyst α-Fe2O3/WO3: A comparison study of α-Fe2O3/WO3 and WO3/NaOH. Water Science and Engineering, 14(2): 119-128. doi: 10.1016/j.wse.2021.06.007
Citation: Mohammad Delnavaz, Javad Farahbakhsh, Seyed Sajad Mahdian. 2021: Photodegradation of reactive blue 19 dye using magnetic nanophotocatalyst α-Fe2O3/WO3: A comparison study of α-Fe2O3/WO3 and WO3/NaOH. Water Science and Engineering, 14(2): 119-128. doi: 10.1016/j.wse.2021.06.007
shu

Photodegradation of reactive blue 19 dye using magnetic nanophotocatalyst α-Fe2O3/WO3: A comparison study of α-Fe2O3/WO3 and WO3/NaOH

doi: 10.1016/j.wse.2021.06.007
  • a.

    Civil Engineering Department, Faculty of Engineering, Kharazmi University, Tehran 15719-14911, Iran

  • b.

    School of Engineering, Edith Cowan University, Joondalup WA 6027, Australia

Funds:

the Fund of Kharazmi University 22073

More Information
  • Corresponding author: E-mail address: delnavaz@khu.ac.ir (Mohammad Delnavaz)
  • Received Date: 2020-10-24
  • Accepted Date: 2021-02-05
    • Available Online: 2021-06-19
    Abstract
  • The photocatalytic degradation of reactive blue 19 (RB19) dye was investigated in a slurry system using ultraviolet (UV) and light-emitting diode (LED) lamps as light sources and using magnetic tungsten trioxide nanophotocatalysts (α-Fe2O3/WO3 and WO3/NaOH) as photocatalysts. The effects of different parameters including irradiation time, initial concentration of RB19, nanophotocatalyst dosage, and pH were examined. The magnetic nanophotocatalysts were also characterized with different methods including scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), X-ray diffraction (XRD), photoluminescence (PL), differential reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FTIR), and vibrating sample magnetometry (VSM). The XRD and FTIR analyses confirmed the presence of tungsten trioxide on the iron oxide nanoparticles. The VSM analysis confirmed the magnetic ability of the new synthesized nanophotocatalyst α-Fe2O3/WO3 with 39.6 emu/g of saturation magnetization. The reactor performance showed considerable improvement in the α-Fe2O3-modified nanophotocatalyst. The impact of visible light was specifically investigated, and it was compared with UV-C light under the same experimental conditions. The reusability of the magnetic nanophotocatalyst α-Fe2O3/WO3 was tested during six cycles, and the magnetic materials showed an excellent removal efficiency after six cycles, with just a 7% decline.

     

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