Graphene/TiO2 composite films for efficient photocatalytic degradation of antibiotics in wastewaters

Barbora Muzikova; Liam Gollino; Radek Zouzelka; Jiri Rathousky; Thierry Pauporté

doi:10.1117/12.2659658

16 March 2023 Graphene/TiO₂ composite films for efficient photocatalytic degradation of antibiotics in wastewaters

Barbora Muzikova, Liam Gollino, Radek Zouzelka, Jiri Rathousky, Thierry Pauporté

Proceedings Volume 12422, Oxide-based Materials and Devices XIV; 124220Q (2023) https://doi.org/10.1117/12.2659658
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Graphene/oxide composite structures can be employed for advanced applications owing to their synergistic properties. We prepared mesoporous TiO₂ layers including (i) graphene oxide and (ii) reduced graphene oxide at various concentrations. The films deposited on glass were tested for photocatalytic degradation, in water and under UV light, of sulfathiazole, a model compound of an eco-persistent antibiotic. The results show the high photocatalytic activity of the TiO2 layers. Moreover, a significant improvement in the photodegradation rate is found for graphene oxide with an optimum concentration of 2 wt. %. It is assigned to a favorable energy level combination that favors the photogenerated charge separation and increases the lifetime of the electron/hole pairs.

Citation Download Citation

Barbora Muzikova, Liam Gollino, Radek Zouzelka, Jiri Rathousky, and Thierry Pauporté "Graphene/TiO₂ composite films for efficient photocatalytic degradation of antibiotics in wastewaters", Proc. SPIE 12422, Oxide-based Materials and Devices XIV, 124220Q (16 March 2023); https://doi.org/10.1117/12.2659658

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