Degradation of organophosphorus pesticide parathion methyl on nanostructured titania-iron mixed oxides

0444161 - ÚACH 2016 RIV NL eng J - Journal Article
Henych, Jiří - Štengl, Václav - Slušná, Michaela - Matys Grygar, Tomáš - Janoš, P. - Kuráň, P. - Šťastný, M.
Degradation of organophosphorus pesticide parathion methyl on nanostructured titania-iron mixed oxides.
Applied Surface Science. Roč. 344, JUL (2015), s. 9-16. ISSN 0169-4332. E-ISSN 1873-5584
R&D Projects: GA ČR(CZ) GAP106/12/1116
Institutional support: RVO:61388980
Keywords : Titania-iron oxides * Homogeneous hydrolysis * Degradation of organophosphates * Parathion methyl
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.150, year: 2015

Titania-iron mixed oxides with various Ti:Fe ratio were prepared by homogeneous hydrolysis of aqueous solutions of titanium(IV) oxysulphate and iron(III) sulphate with urea as a precipitating agent. The synthesized samples were characterized by X-ray diffraction, Raman and infrared spectroscopy, scanning and transmission electron microscopy, XRF analysis, specific surface area (BET) and porosity determination (BJH). These oxides were used for degradation of organophosporus pesticide parathion methyl. The highest degradation efficiency approaching <70% was found for the samples with Ti: Fe ratio 0.25:1 and 1:0.25. Contrary, parathion methyl was not degraded on the surfaces of pure oxides. In general, the highest degradation rate exhibited samples consisted of the iron or titanium oxide containing a moderate amount of the admixture. However, distinct correlations between the degradation rate and the sorbent composition were not identified.
Permanent Link: http://hdl.handle.net/11104/0246747