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Feasible Synthesis of TiO2 Deposited on Kaolin for Photocatalytic Applications

Published online by Cambridge University Press:  01 January 2024

Jiří Henych  and
Václav Štengl
Jiří Henych*
Affiliation:
Department of Solid State Chemistry, Institute of Inorganic Chemistry AS CR v.v.i., 250 68 Husinec-Řež, Czech Republic Faculty of the Environment, University of Jan Evangelista Purkyně, Králova Výšina 7, 400 96 Ústí nad Labem, Czech Republic
Václav Štengl
Affiliation:
Department of Solid State Chemistry, Institute of Inorganic Chemistry AS CR v.v.i., 250 68 Husinec-Řež, Czech Republic Faculty of the Environment, University of Jan Evangelista Purkyně, Králova Výšina 7, 400 96 Ústí nad Labem, Czech Republic
*
*E-mail address of corresponding author: henych@iic.cas.cz
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Abstract

The aim of the present study was to synthesize a photocatalyst on the basis of TiO2 with kaolin as the support material. Properties such as layered structure and a suitable particle size of kaolin could be beneficial in the production of a high-quality and relatively cheap photocatalyst on an industrial scale. Homogeneous hydrolysis with urea as a precipitation agent and kaolin as support material was used to obtain a kaolin surface covered with TiO2. Samples were characterized by means of X-ray powder diffraction, infrared and Raman spectroscopy, high-resolution transmission electron microscopy, Brunauer-Emmett-Teller surface area, and Barrett-Joyner-Halenda porosity determination. Photocatalytic activity was assessed by a Reactive Black 5 azo dye discoloration in a water suspension and by acetone decomposition on a thin layer of sample in a gas phase. The characterization confirmed that the well crystallized TiO2 was distributed effectively over the whole surface of a kaolin substrate, and photocatalytic tests revealed that the active surface layer of titania particles on kaolin performed well, suggesting that kaolin acts as a suitable support.

Keywords

Homogeneous HydrolysisKaolinPhotocatalysisTiO2Urea

Information

Type
Research Article
Information
Clays and Clay Minerals , Volume 61 , Issue 3 , June 2013 , pp. 165 - 176
Copyright
Copyright © The Clay Minerals Society 2013

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