Journal
RADIATION PHYSICS AND CHEMISTRY
Volume 81, Issue 3, Pages 322-330Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2011.10.023
Keywords
Iron-doped titania; Radiolysis; Semiconductors; Photocatalysis
Funding
- European Social Fund
- MECHANIZM WIDDOK Program of Polish State [Z/2.10/II/2.6/04/05/U/2/06]
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Fe-doped TiO2 catalyst was prepared by wet impregnation, using TiO2 P25 Degussa as a precursor and Fe(NO3)(3) as a dopant, followed by irradiation with an electron beam or gamma-rays. Surface properties of Fe/TiO2 samples were examined by BET, XRD, ToF-SIMS, and TPR methods. The photocatalytic activity towards destruction of the anionic surfactant, sodium dodecylbenzenesulfonate (SDBS), in aqueous solutions was higher for the irradiated Fe/TiO2 catalysts than for bare TiO2 P25 or that calcined at 500 degrees C. The results show that irradiated catalysts exhibit a more uniform texture with high dispersion of iron species. An enhancement of the activity of irradiated Fe/TiO2 systems can be attributed to the synergetic effects of small crystallite size and homogenous distribution of iron species including FeTiO3 phase. (C) 2011 Elsevier Ltd. All rights reserved.
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