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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Authors: | L. Gomathi Devi Nagaraju Kottam S. Girish Kumar K. S. Anantha Raju |
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Affiliation: | 1. Department of Post Graduate Studies in Chemistry, Bangalore University, Central College City Campus, Dr. Ambedkar Street, Bangalore, 560001, India
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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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