Author/Authors :
Zatloukalová, K. 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 , Obalová, L. 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 , Kočí, K. 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 , Čapek, L. Department of Physical Chemistry - Faculty of Chemical Technology - University of Pardubice - Studentská 95 - 532 10 Pardubice - Czech Republic , Matěj, Z. Department of Condensed Matter Physics - Faculty of Mathematics and Physics - Charles University in Prague - Ke Karlovu 5 - Prague 2 121 16 - Czech Republic , Šnajdhaufová, H. Institute of Chemical Process Fundamentals CAS - Rozvojová 135 - Prague - Czech Republic , Ryczkowski, J. Faculty of Chemistry - Maria Curie-Skłodowska University (UMCS) - Pl. M. Curie-Skłodowskiej 5 - 20-031 Lublin - POLAND , Słowik, G. Faculty of Chemistry - Maria Curie-Skłodowska University (UMCS) - Pl. M. Curie-Skłodowskiej 5 - 20-031 Lublin - POLAND
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.
Keywords :
NnF Ceram TiO2 , Electric energy per order , Photocatalysis , Water purification , Endocrine disruptors
