Synthesis and photocatalytic activity of mesoporous nanocrystalline Fe-doped titanium dioxide

Mohd Qamar, Belabbes A. Merzougui, Dalaver H. Anjum, Abbas Saeed Hakeem, Zain Hassan Yamani, Detlef W. Bahnemann

    Research output: Contribution to journalArticlepeer-review

    29 Scopus citations

    Abstract

    Synthesis of mesoporous nanocrystalline iron-doped titania following the sol-gel method is presented in this work. Samples with various molar ratios (0.1, 0.25, 0.5, 1.0, 2.5, 5.0, 10 and 20%) of Fe to Ti were prepared. The particle size was found to be in the range of ∼12 nm while mesopores were approximately near to ∼5.5 nm. The effect of Fe as doping element on titania properties, such as crystallite size, surface area, pore size, pore volume and d-spacing was investigated. Moreover, distribution of Fe in TiO2 matrix was determined by elemental mapping whereas change in absorption properties was evaluated by diffuse reflectance spectroscopy. It was observed that as the Fe content was increased, a partial phase transformation from anatase to rutile and pseudorutile took place. Effect of ultraviolet, ultraviolet-visible and visible radiations on the photocatalytic activity of these catalysts was studied by removal of Methyl Orange as model pollutant. As results, it was found that the photocatalytic activity of such catalysts depends strongly on Fe amount and type of radiation. © 2013 Elsevier B.V.
    Original languageEnglish (US)
    Pages (from-to)158-165
    Number of pages8
    JournalCatalysis Today
    Volume230
    DOIs
    StatePublished - Jul 2014

    ASJC Scopus subject areas

    • Chemistry(all)
    • Catalysis

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