Photocatalytic reduction of hexavalent chromium with commercial Fe/Ti oxide catalyst under UV and visible light irradiation

  • M. M. S. SanadEmail author
  • E. A. Abdel-Aal
  • H. M. Osman
  • A. T. Kandil
Original Paper


The photoreduction efficiency of toxic hexavalent chromium into non-toxic trivalent chromium was studied using local low-cost material and modern technology. The materials involved different iron–titanium oxide nanopowders synthesized via simple hydrothermal–hydrolysis process. X-ray diffraction and high-resolution transmission electron microscope were employed to study the structural properties of the as-prepared samples. The effects of molar ratio (Fe/Ti) and hydrothermal temperature on spectroscopic properties have been investigated using Fourier transform infrared FT-IR spectroscopy. The photocatalytic performance of hexavalent chromium was systematically studied at various conditions including initial concentration of Cr(VI), hydrothermal temperature and Fe/Ti ratios of mixed iron–titanium oxide powders. It has been found that the highest photoreduction efficiencies of Cr(VI) were 95.7 and 86.2% at initial concentrations 10 and 60 ppm of Cr(VI), respectively. The synthesized mixed Fe2O3–TiO2 photocatalyst exhibited higher efficiency of about 88% under visible light irradiation. The as-prepared mixed oxide catalyst exhibited high photocatalytic conversion efficiency and recycling stability in comparison with different commercial catalysts.


Hydrothermal Hexavalent chromium Fe/Ti oxide photocatalyst Photoreduction activity 



The authors are highly appreciated for the El-Nasr Mining Company for Intermediate Chemicals for providing the sample of ilmenite ore.


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Copyright information

© Islamic Azad University (IAU) 2017

Authors and Affiliations

  • M. M. S. Sanad
    • 1
    Email author
  • E. A. Abdel-Aal
    • 1
  • H. M. Osman
    • 1
  • A. T. Kandil
    • 2
  1. 1.Central Metallurgical Research and Development InstituteHelwan, CairoEgypt
  2. 2.Chemistry Department, Faculty of ScienceHelwan UniversityCairoEgypt

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