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Structural, morphological and optical properties of nanostructured NF-TiO2 films for the photocatalytic degradation of emerging micropollutants in water under visible and solar light

Citation:

Pelaez M, Falaras P, Likodimos V, Kontos AG, Curell K, Stathatos E, Dionysiou DD. Structural, morphological and optical properties of nanostructured NF-TiO2 films for the photocatalytic degradation of emerging micropollutants in water under visible and solar light. In: ACS National Meeting Book of Abstracts. ; 2010.

Abstract:

In this study, immobilized nitrogen and fluorine co-doped TiO2 (NF-TiO2) was synthesized employing a fluorosurfactant-based sol-gel method to tailor-design the nanoparticulate, structural and photocatalytic properties of the catalyst. Besides the co-doping of nitrogen and fluorine observed for visible light photoresponse, the nanostructure of the dip-coated films was effectively controlled by modifying the molar ratio of the fluorosurfactant. The synthesized films were evaluated for the destruction of two emerging contaminants, hepatotoxin microcystin LR (MC-LR) and herbicice Amitrole. NF-TiO2 films showed high photocatalytic activity for the degradation of both MC-LR and Amitrole compared to control experiments under both visible and solar light irradiation. Moreover, NF-TiO2 nanostructured films also exhibited high mechanical stability and no irreversible changes were observed during photocatalysis after 3 cycles under visible light. These results are promising for further development of sustainable remediation technologies for the treatment of water contaminated with MC-LR and other persistent micropollutants, based on advanced oxidation processes driven by solar light as a renewable source of energy.

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