Water-based synthesis of TiO2/CeO2 composites supported on plasma-treated montmorillonite for parathion methyl degradation

0474825 - ÚACH 2018 RIV NL eng J - Journal Article
Henych, Jiří - Kormunda, M. - Šťastný, Martin - Janoš, P. - Vomáčka, Petr - Matoušek, J. - Štengl, Václav
Water-based synthesis of TiO2/CeO2 composites supported on plasma-treated montmorillonite for parathion methyl degradation.
Applied Clay Science. Roč. 144, AUG (2017), s. 26-35. ISSN 0169-1317. E-ISSN 1872-9053
R&D Projects: GA MŠMT(CZ) LM2015073
Institutional support: RVO:61388980
Keywords : Montmorillonite * Parathion methyl * Plasma treatment * TiO2 /CeO2 composites
OECD category: Inorganic and nuclear chemistry
Impact factor: 3.641, year: 2017

The undemanding water-based synthesis was employed for the preparation of TiO2/CeO2 composites supported on Montmorillonite (MT). The prior plasma treatment of Montmorillonite led to significantly faster dispergation in water during the synthesis. The composites were used as reactive adsorbents against toxic organophosphorus pesticide parathion methyl. Efficient pillaring of the Montmorillonite layers by surface deposition of TiO2/CeO2 composites reflected in a substantially improved degradation activity towards parathion methyl in non-polar (heptane) and polar solvents (acetonitrile) investigated by HPLC/DAD. Moreover, the use of plasma treated Montmorillonite in the composites resulted in a higher degradation rate than with use of pristine MT. The formation of composites and their physicochemical properties were studied by XRD, XPS, FTIR, nitrogen physisorption, SEM and HRTEM/EDS mapping. Prior plasma treatment of the MT in a simple arrangement led to an easier formation of the composites and caused further improvement of the samples activity.
Permanent Link: http://hdl.handle.net/11104/0271776