A study on the photocatalytic reactions of TiO2 with certain pyrimidine bases: Effects of dopants (Fe3+) and calcination

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Abstract

A steady-state photolytic investigation using TiO2 as the photocatalyst in its reaction with uracil, thymine, 6-methyluracil and cytosine in an aqueous suspension has been carried out. Influence of initial [cytosine], amount of TiO2 added and pH on the reaction rate and Φ were evaluated. The photoprocess obeys the Langmuir-Hinshelwood isotherm. Fe3+-doped TiO2 prepared by the impregnation method was found to have a modified photocatalytic activity in the photooxidation of all the above-mentioned pyrimidine bases. The effect of calcination (preheat treatment) of the TiO2 photocatalyst was a rate retardation. The role of these parameters on surface properties of TiO2 is suitably explained. (C) 2000 Elsevier Science B.V.

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Dhananjeyan, M. R., Kandavelu, V., & Renganathan, R. (2000). A study on the photocatalytic reactions of TiO2 with certain pyrimidine bases: Effects of dopants (Fe3+) and calcination. Journal of Molecular Catalysis A: Chemical, 151(1–2), 217–223. https://doi.org/10.1016/S1381-1169(99)00246-0

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