Korean Journal of Chemical Engineering

, Volume 33, Issue 7, pp 2027–2033 | Cite as

Ni2+ reduction under solar irradiation over CuFe2O4/TiO2 catalysts

  • Maamar Fedailaine
  • Sabrina Berkani
  • Mohamed TrariEmail author
Catalysis, Reaction Engineering


The photo-electrochemical characterization of the hetero-system CoFe2O4/TiO2 was undertaken for the Ni2+ reduction under solar light. The spinel CoFe2O4 was prepared by nitrate route at 940 °C and the optical gap (1.66 eV) was well matched to the sun spectrum. The flat band potential (-0.21 VSCE) is more cathodic than the potential of Ni2+/Ni couple (-0.6 VSCE), thus leading to a feasible nickel photoreduction. TiO2 with a gap of 3.2 eV is used to mediate the electrons transfer. The reaction is achieved in batch configuration and is optimized with respect to Ni2+ concentration (30 ppm); a reduction percentage of 72% is obtained under sunlight, the Ni2+ reduction is strongly enhanced and follows a first order kinetic with a rate constant of 4.6×10-2 min-1 according to the Langmuir-Hinshelwood model.


Photocatalysis Spinel CuFe2O4 Nickel Sunlight 


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Supplementary material

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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2016

Authors and Affiliations

  • Maamar Fedailaine
    • 1
  • Sabrina Berkani
    • 1
  • Mohamed Trari
    • 1
    Email author
  1. 1.Laboratory of Storage and Valorization Renewable Energies (USTHB)AlgiersAlgeria

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