Influence of iron doping on photocatalytic activity of TiO2 coatings formed on titanium by plasma electrolytic oxidation

  • S. Stojadinović
  • N. Radić
  • N. Tadić
  • R. Vasilić
  • P. Stefanov
  • B. Grbić


This paper presents the results of our recent investigation focused on the preparation and possible photocatalytic application of iron doped TiO2 coatings formed by plasma electrolytic oxidation of high purity titanium in electrolyte containing FeSO4. The morphology, phase and elemental composition, and absorption band of the coatings were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and diffuse reflectance spectroscopy. The photocatalytic activity of coatings was evaluated by measuring the degradation of methyl orange under simulated sunlight conditions. It was found that the addition of iron precursor to electrolyte solution improves the photocatalytic properties of obtained coatings with respect to pure TiO2 coating. The incorporation of iron in TiO2 lattice was identified as the main factor affecting the increase of photocatalytic activity. The highest photocatalytic activity was observed when coatings were processed for 2 min with addition of 1 g/L FeSO4 to electrolyte.



This work is supported by the Ministry of Education, Science, and Technological Development of the Republic of Serbia under Projects Nos. 171035 and 172022.


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Authors and Affiliations

  1. 1.Faculty of PhysicsUniversity of BelgradeBelgradeSerbia
  2. 2.Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and MetallurgyUniversity of BelgradeBelgradeSerbia
  3. 3.Institute of General and Inorganic ChemistryBulgarian Academy of SciencesSofiaBulgaria

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