7 March 2017 Mesoporous TiO2/graphene composite films for the photocatalytic degradation of eco-persistent pollutants
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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.
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Yuly Kusumawati, Yuly Kusumawati, Thierry Pauporté, Thierry Pauporté, Bruno Viana, Bruno Viana, Radek Zouzelka, Radek Zouzelka, Monika Remzova, Monika Remzova, Jiri Rathousky, 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); doi: 10.1117/12.2253132; https://doi.org/10.1117/12.2253132
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