Abstract
The TiO2-calcium phosphate (TiO2/CP) nanocomposites with different ratios were prepared by precipitation of calcium phosphate in the presence of nano-sized TiO2. The products were characterized by BET, XRD, SEM and EDX techniques. Photocatalytic activity of the nanocomposites was evaluated as a rate constant of decomposition reaction of methylene blue (MB) in aqueous suspensions under UVA irradiation. It was observed that all of the nanocomposites showed higher photocatalytic activity in comparison to pure TiO2 catalyst. In particular, the rate constant photodecomposition of MB on TiO2/CP composite at 9:1 ratio (w/w) was above five times higher than on pure TiO2.
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