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Abstract
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Titanium dioxideś application is limited by its poor visible light harvesting capability, but it is an excellent photocatalyst. In this work, a visible light responsive photocatalytyst in organic reactions was developed using Zinc-porphyrin (ZnTCPP) supported on TiO2. A Zinc-porphyrin dye with four carboxyphenyl moiety of ancillary (ZnTCPP) was studied as a sensitizer in combination with TiO2. All intermediate nanomaterial and final nanohybrid compounds were characterized by FESEM, EDAX, XRD and FT-IR spectroscopy. The as-prepared nanohybrid photocatalysts have apparent adsorption in visible light region, making them active for visible-light-induced organic reactions. Nanohybrid ZnTCPP@TiO2 shows extremely higher efficiency and shorter reaction time then TiO2 nanoparticles. Remarkably, photocatalytic performance of the TiO2 nanoparticles were enhanced from 70 to 90% by anchoring the TCPP on the TiO2 in oxidation reaction. So, this nanohybrid compounds have potentials to be used as high performance heterogeneous photocatalyst under visible light irradiation with advantages of high activity, high selectivity, reusability and easily separation for organic reactions.
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