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Cauliflower-like CeO2-TiO2 Hybrid Nanostructures with Extreme Photocatalytic and Self-Cleaning Properties

Abstract

In recent years, heterogenous photocatalysis gained an enormous interest due to continuously increasing environmental pollution. Here we propose a facile approach to synthesize cauliflower-like CeO2-TiO2 hybrid structures by magnetron reactive sputtering, exhibiting an extremely high photocatalytic activity. While heating and air-quenching of sputter deposited TiO2 thin film (first layer) triggered the formation of nanocrack network, second heat treatment led to transformation of CeO2 film (second layer) into CeO2 nanoclusters (NCs). We address the resulting high photocatalytic activity to the confined structure of the CeO2 NCs and CeO2-TiO2 interface, which allows Ce3+/Ce4+ dynamic shifting. In addition to high photocatalytic activity in an aqueous medium, the prepared CeO2-TiO2 hybrid structures exhibited a significant self-cleaning property in air (non-aqueous).

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Publication details

The article was received on 11 Feb 2019, accepted on 14 Apr 2019 and first published on 15 Apr 2019


Article type: Communication
DOI: 10.1039/C9NR01208G
Citation: Nanoscale, 2019, Accepted Manuscript

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    Cauliflower-like CeO2-TiO2 Hybrid Nanostructures with Extreme Photocatalytic and Self-Cleaning Properties

    S. Veziroglu, K. Röder, O. Gronenberg, A. Vahl , O. Polonskyi, T. Strunskus, H. Rubahn, L. Kienle, J. Adam, J. Fiutowski, F. Faupel and O. C. Aktas, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR01208G

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