Abstract
Bisphenol A (BPA) is worldwide used to produce plastics and/or epoxy-based foodstuff packages. But it is known that this compound is considered as a quite toxic contaminant due to (1) its similarity to the hormone estrogen and (2) its universal use in many industrial proceses. In our study the photodegradation of BPA stimulated by tin(IV) oxide-modified silica-titania nanocomposites was investigated. The reactions were characterized by the kinetic parameters (pseudo-first constant k 1 0.036–0.0896⋅10−2 min−1 for non-calcined and 0.0389–0.1144⋅10−2 min−1 for calcined photocatalysts), half-life time t 1/2 7.74–19.23 and 6.66–17.83 min for non- and calcined ones, respectively, allowing to determine both the weight kw and the specific surface area ks of each sample. It will be shown that most SnO2-doped silica-titania oxides are more active than commercially available TiO2 (P-25, Degussa). The best results of BPA removal were obtained for 6 wt% addition of SnO2 to both calcined and non-calcined photocatalysts.
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Acknowledgements
The research leading to these results has received funding from the People Programme of the EU FP7 (FP7/2007–2013), Marie Curie International Research Staff Exchange Scheme (Project NANOBIOMAT, Grant No. 612484).
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Czech, B., Nazarkovsky, M.A., Gun’ko, V.M. (2015). Photocatalytic Activity of SnO2-Doped SiO2@TiO2 Nanocomposites. In: Petkov, P., Tsiulyanu, D., Kulisch, W., Popov, C. (eds) Nanoscience Advances in CBRN Agents Detection, Information and Energy Security. NATO Science for Peace and Security Series A: Chemistry and Biology. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9697-2_25
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DOI: https://doi.org/10.1007/978-94-017-9697-2_25
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