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Preparation and characterization of photoactive composite kaolinite/TiO(2)
K. Mamulová Kutláková, J. Tokarský, P. Kovář, S. Vojtěšková, A. Kovářová, B. Smetana, J. Kukutschová, P. Čapková, V. Matějka,
Language English Country Netherlands
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Azo Compounds chemistry radiation effects MeSH
- Coloring Agents chemistry radiation effects MeSH
- Benzenesulfonates chemistry radiation effects MeSH
- Photolysis MeSH
- Kaolin chemistry MeSH
- Environmental Pollutants chemistry radiation effects MeSH
- Nanocomposites chemistry MeSH
- Computer Simulation MeSH
- Surface Properties MeSH
- Industrial Waste prevention & control MeSH
- Titanium chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Preparation of nanocomposite kaolinite/TiO(2), using hydrolysis of titanyl sulfate in the presence of kaolin was addressed. A variable (kaolin)/(titanyl sulfate) ratio has been used in order to achieve the desired TiO(2) content in prepared nanocomposites. Calcination of the composites at 600 °C led to the transformation of the kaolinite to metakaolinite and to origination of metakaolinite/TiO(2) composites. The prepared samples were investigated using X-ray fluorescence spectroscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetry and diffuse reflectance spectroscopy in the UV-VIS region. Structural ordering of TiO(2) on the kaolinite particle surface was modeled using empirical force field atomistic simulations in the Material Studio modeling environment. Photodegradation activity of the composites prepared was evaluated by the discoloration of Acid Orange 7 aqueous solution.
References provided by Crossref.org
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