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- Title
Removal study of the hormone17 alpha-ethynylestradiol and methylene blue dye from water using TiO2, Mn2O3 and TiO2/Mn2O3 thin films.
- Authors
Rezende, T. T. A.; Garcia, L. M. P.; Ferreira, T. L. B.; Godinho, M. J.; Nascimento, R. M.; Paskocimas, C. A.; Bomio, M. R. D.; Motta, F. V.
- Abstract
The disposal of pollutants in the surface, underground, and public water supply is an important problem, which is why it is necessary to study more efficient photocatalysts in the treatment of wastewater. In this context, thin films of TiO2, Mn2O3 and TiO2/Mn2O3 were prepared by the hydrolysis of precursors in the presence of citric acid and ethylene glycol, to evaluate the photocatalytic performance in the degradation of methylene blue dye and the hormone 17a-ethinylestradiol (EE2), the measurements were repeated 10 times in a period of 300 min. Thin films were deposited by spin-coating on Si (100) substrates and calcined at 500 °C and 600 °C for 2 h. Nanocomposites were characterized by X-ray diffraction, atomic force microscopy, scanning electron microscopy, UV–visible spectroscopy, photocatalytic activity, and photoluminescence. X-ray diffraction results revealed that no other phase was formed besides anatase and bixbite, indicating that there was no chemical interaction between the TiO2 and Mn2O3 layers. The results show the degradation values of methylene blue in approximately 57% and for the 17a-ethinylestradiol a degradation around 82%, showing that the studied photocatalysts are promising, mainly for the degradation of 17a-ethinylestradiol.
- Subjects
THIN films; DYE-sensitized solar cells; METHYLENE blue; WATER use; ETHYLENE glycol; ATOMIC force microscopy; WASTEWATER treatment
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 12, p9260
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-020-03466-9