Mesoporous TiO2/Graphene Composite Films for the Photocatalytic Degradation of Eco-Persistent Pollutants

Yuly Kusumawati; Thierry Pauporté; Bruno Viana; Radek Zouzelka; Monika Remzova; Jiri Rathousky

doi:10.1117/12.2253132

7 March 2017 Mesoporous TiO₂/graphene composite films for the photocatalytic degradation of eco-persistent pollutants

Yuly Kusumawati, Thierry Pauporté, Bruno Viana, Radek Zouzelka, Monika Remzova, Jiri Rathousky

Proceedings Volume 10105, Oxide-based Materials and Devices VIII; 1010529 (2017) https://doi.org/10.1117/12.2253132
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Graphene/oxide composite structures are attracting increasing attention for many advanced applications. In the present work, mesoporous layers composed of TiO₂ nanoparticles and graphene at various concentrations have been coated on conductive glass substrates. They have been tested for the photocatalytic degradation of 4-chlorophenol used as a model compound of an eco-persistent pollutant dilute in water. The formation of intermediate degradation products, namely, hydroquinone and benzoquinone, has been followed. The results show the high photocatalytic activity of the layers and a beneficial effect of graphene for an optimum concentration of 1.2 wt. %. The decrease in the activity observed at higher graphene content is assigned to the light absorption by this component. The key parameters for the enhancement of the photocatalytic performance are discussed.

Citation Download Citation

Yuly Kusumawati, Thierry Pauporté, Bruno Viana, Radek Zouzelka, Monika Remzova, and Jiri Rathousky "Mesoporous TiO₂/graphene composite films for the photocatalytic degradation of eco-persistent pollutants", Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 1010529 (7 March 2017); https://doi.org/10.1117/12.2253132

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