Environmental contamination by pharmaceuticals is an emerging issue. Specifically, the family of antibiotic tetracyclines is produced in great amounts for disease treatment for humans. Even if the OTC is present in low concentration, it is hardly removable by conventional water treatment processes. It is well known that photocatalysis is able to degrade the OTC under UV and visible light irradiation. The aim of this work was to remove the OTC using novel catalytic composites consisting of Fe-N doped TiO2 supported on visible excited long afterglow phosphors (green phosphors) that emit around 490 nm. The advantage to use the green phosphors is to exploit the long persistent luminescence, for several hours also in the absence of  visible light excitation. The results showed that the photocatalytic degradation of OTC proceeds also after turning off the excitation light.

Photocatalytic removal of oxytetracycline (OTC) using the persistent luminescence of green phosphors functionalized with Fe-N doped TiO<sub>2</sub>

248th National Meeting (2014)

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Photocatalytic removal of oxytetracycline (OTC) using the persistent luminescence of green phosphors functionalized with Fe-N doped TiO2

Photocatalytic removal of oxytetracycline (OTC) using the persistent luminescence of green phosphors functionalized with Fe-N doped TiO₂