Photocatalytic Degradation of Endocrine Disruptor Compounds in Water over Immobilized TiO2 Photocatalysts

Zatloukalová, K; Obalová, L.; Koči, Kamila; Čapek, L.; Matěj, Z.; Šnajdhaufová, H.; Ryczkowski, J.; Słowik, G.

doi:10.30492/ijcce.2017.26694

Photocatalytic Degradation of Endocrine Disruptor Compounds in Water over Immobilized TiO2 Photocatalysts

Document Type : Research Article

Authors

¹ Institute of Environmental Technology and Faculty of Metallurgy and Material Engineering, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava – Poruba, Czech Republic

² Department of Physical Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic

³ Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, Prague 2 121 16, Czech Republic

⁴ Institute of Chemical Process Fundamentals CAS, Rozvojová 135, Prague, Czech Republic

⁵ Faculty of Chemistry, Maria Curie-Skłodowska University (UMCS), Pl. M. Curie-Skłodowskiej 5, 20-031 Lublin, POLAND

10.30492/ijcce.2017.26694

Abstract

Recently, the fate of endocrine disruptors in environmentally relevant samples has attracted considerable attention. Semiconductor photocatalysis may offer an appealing methodology to treat such contaminants. In this respect, the simultaneous degradation of synthetic hormones employing UV irradiation and TiO₂ as the photocatalyst were investigated. Our interest was focused on designing a photocatalytic reactor and finding a way to immobilize a powder photocatalyst by water-glass. The nanofiber powder photocatalyst NnF Ceram TiO₂ was chosen as powder photocatalysts based on TiO₂. The material was characterized by N₂ adsorption/desorption, XRD, UV-Vis spectrometry, and TEM. The reaction kinetics of hormone decomposition corresponds to a first-order reaction rate. It was shown that progesterone and all types of estradiols were decomposed most effortlessly in the presence of NnF Ceram TiO₂ photocatalysts. On the other hand, the lowest conversion was reached for estrone and estriol. The photocatalysts based on TiO₂ immobilized by water-glass seems to be promising for photocatalytic water purification.

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