Synthesis of mesoporous TiO2 in aqueous alcoholic medium and evaluation of its photocatalytic activity

L. Kumaresan, A. Prabhu, M. Palanichamy, V. Murugesan

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    25 Scopus citations


    Mesoporous TiO2 was synthesized using triblock copolymer as the structure directing template in ethanol/water, isopropanol/water or 1-butanol/water medium by sol-gel method. The presence of intense peak at low angle in the XRD patterns confirmed the orderly arrangement of mesopores in the material. Among the three different alcohols, ethanol had influenced better in controlling the particle size than others. The enhanced specific surface area also revealed the formation of mesopores. Aggregates of particles were clearly seen in the TEM images and the size of the particles was approximately 10 nm. The photocatalytic activity of mesoporous TiO2 was evaluated using aqueous alachlor as a model pollutant. The activity of mesoporous TiO 2 synthesized in ethanol/water mole ratio of 50 was higher than other mesoporous TiO2 and commercial TiO2 (Degussa P-25). The transport of excited electrons from one particle to its neighboring nanoparticles of mesoporous TiO2 is suggested to be the cause for enhanced photocatalytic activity.

    Original languageBritish English
    Pages (from-to)445-452
    Number of pages8
    JournalMaterials Chemistry and Physics
    Issue number1-2
    StatePublished - 15 Mar 2011


    • Alachlor
    • Mesoporous TiO
    • Photocatalysis
    • Sol-gel method


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