Nanocomposites and nanomaterials

Sn-TiO2 nanomaterials for photocatalytic degradation of antibiotics
Kutuzova A.S.1,2, Dontsova T.A.1
1 Department of Technology of Inorganic Substances, Water Purification and General Chemical Technology, Faculty of Chemical Technology, Igor Sikorsky Kyiv Polytechnic Institute. Prospect Peremohy, 37, Kyiv-03056, Ukraine. 
E-mail: kutuzova.anasta@gmail.com
2 Leibniz Institute for Catalysis (LIKAT), Albert-Einstein-Straße 29a, 18059 Rostock, Germany.

Pollution of water bodies with such micropollutants as antibiotics has become an alarming issue [1]. One of the most severe problems is development of antibiotic resistance in bacteria [2], making it impossible to treat infectious diseases in humans and animals. Since common wastewater treatment plants fail to eliminate such pharmaceutical pollutants [3], more advanced treatment techniques should be employed – advanced oxidation processes and heterogeneous photocatalysis, in particular.
Photocatalytic tests over P25-TiO2 (Evonik, Germany) nanomaterials doped with Sn (10 wt.%) were carried out on model solutions of ciprofloxacin (CIP, 10 mg/L) under both ultraviolet (365 nm) and visible (395 nm) light. After 30 min of irradiation, 99,1% and 93% photocatalytic degradation of CIP was observed under UV and visible light irradiation, respectively.
Obtained results demonstrated high efficiency of the synthesized photocatalysts towards photocatalytic degradation of ciprofloxacin, also under visible light. Further research should be carried out on photocatalytic activity of Sn-TiO2 nanomaterials, doped with rare earth metals. 

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