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Mechanism of Charge Transfer in the Transition Metal Ion Doped TiO2 with Bicrystalline Framework of Anatase and Rutile: Photocatalytic and Photoelectrocatalytic Activity

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Abstract

The high photocatalytic activity of the Mn2+ doped TiO2 with bicrystalline framework of anatase and rutile is probed for the degradation of benzene under solar light with/without applied bias. The enhanced activity is attributed to the transfer of electrons from the rutile to electron trapping/lattice trapping sites of anatase and also to the impurity level created by the dopant which favours effective charge separation. The shallow detrapping nature of Mn2+ dopant additionally contributes to the overall enhancement in the photocatalytic activity especially in the presence of applied electric field.

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Acknowledgments

Financial assistance from UGC Major Research Project (2007–2010), Government of India is acknowledged. The author Nagaraju Kottam acknowledges to M. S. Ramaiah institute of Technology for their support.

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Authors and Affiliations

  1. Department of Post Graduate Studies in Chemistry, Bangalore University, Central College City Campus, Dr. Ambedkar Street, Bangalore, 560001, India

    L. Gomathi Devi, Nagaraju Kottam, S. Girish Kumar & K. S. Anantha Raju

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  1. L. Gomathi Devi
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  2. Nagaraju Kottam
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  3. S. Girish Kumar
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  4. K. S. Anantha Raju
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Correspondence to L. Gomathi Devi.

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Gomathi Devi, L., Kottam, N., Girish Kumar, S. et al. Mechanism of Charge Transfer in the Transition Metal Ion Doped TiO2 with Bicrystalline Framework of Anatase and Rutile: Photocatalytic and Photoelectrocatalytic Activity. Catal Lett 131, 612–617 (2009). https://doi.org/10.1007/s10562-009-0015-y

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  • DOI: https://doi.org/10.1007/s10562-009-0015-y

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