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

0482969 - ÚFCH JH 2018 RIV US eng C - Conference Paper (international conference)
Kusumawati, Y. - Pauporté, T. - Viana, B. - Žouželka, Radek - Remzová, Monika - Rathouský, Jiří
Mesoporous TiO2/Graphene Composite Films for the Photocatalytic Degradation of Eco-Persistent Pollutants.
Proceedings of SPIE. In: OXIDE-BASED MATERIALS AND DEVICES VIII. Bellingham: SPIE-INT SOC OPTICAL ENGINEERING, 2017 - (Teherani, F.; Look, D.; Rogers, D.; Bozovic, I.), Roč. 10105, č. 2017 (2017), č. článku 1010529. ISBN 978-1-5106-0652-4. ISSN 0277-786X.
[Conference on Oxide-Based Materials and Devices VIII /8./. San Francisco (US), 29.01.2017-01.02.2017]
Institutional support: RVO:61388955
Keywords : TiO2 * Graphene * Nanocomposite * Photocatalysis * 4-Chlorophenol * hplc
OECD category: Physical chemistry

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.
Permanent Link: http://hdl.handle.net/11104/0278380