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

0572781 - ÚFCH JH 2024 RIV US eng C - Conference Paper (international conference)
Mužíková, Barbora - Gollino, L. - Žouželka, Radek - Rathouský, Jiří - Pauporté, T.
Graphene/TiO2 composite films for efficient photocatalytic degradation of antibiotics in wastewaters.
Proceedings of SPIE The International Society for Optical Engineering. Bellingham: The Society of Photo-Optical Instrumentation Engineers, 2023, Roč. 12422 (2023), č. článku 124220Q. ISBN 978-151065949-0. ISSN 0277-786X.
[Oxide-based Materials and Devices 2023 /14./. San Francisco (US), 30.01.2023-02.03.2023]
Institutional support: RVO:61388955
Keywords : Antibiotics * Nanocomposite layer * Photocatalysis * Sulfathiazole * TiO2
OECD category: Physical chemistry

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.
Permanent Link: https://hdl.handle.net/11104/0343348