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Title: Chemical degradation of trimethyl phosphate as surrogate for organo-phosporus pesticides on nanostructured metal oxides

Abstract

Nanostructured TiO{sub 2} and mixed oxides of Ti and Fe, Hf, In, Mn or Zr -were prepared by homogeneous hydrolysis of aqueous solution of metal sulphates with urea. The oxides were characterised by X-ray powder diffraction (XRD), scanning electron microscopy, particle size distribution, surface area and porosity. The oxide materials consists of a few nanometre primary crystals (mainly anatase) arranged in a few micrometre regular spherical agglomerates with specific surface area 133–511 m{sup 2} g{sup −1}. The FTIR diffuse spectroscopy was used for monitoring chemical degradation of trimethylphosphate (TMP) as a surrogate for organo-phosphorus pesticides under ambient and higher temperatures. Undoped TiO{sub 2} and Ti,Mn-mixed oxide were most active in cleavage (hydrolysis) of CH{sub 3}O from TMP at room temperature and 100 °C. Cleavage of CH{sub 3}O in the other studied mixed oxides was not complete until temperature exceeds the boiling point of TMP.

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22420765
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 61; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; AQUEOUS SOLUTIONS; BOILING POINTS; CRYSTALS; FOURIER TRANSFORMATION; HAFNIUM OXIDES; HYDROLYSIS; INFRARED SPECTRA; MANGANESE OXIDES; NANOSTRUCTURES; PARTICLE SIZE; PESTICIDES; PHOSPHATES; PHOSPHORUS; SCANNING ELECTRON MICROSCOPY; SULFATES; TEMPERATURE DEPENDENCE; TITANIUM OXIDES; X-RAY DIFFRACTION

Citation Formats

Štengl, Václav, E-mail: stengl@iic.cas.cz, Henych, Jiří, Grygar, Tomáš, and Pérez, Raúl. Chemical degradation of trimethyl phosphate as surrogate for organo-phosporus pesticides on nanostructured metal oxides. United States: N. p., 2015. Web. doi:10.1016/J.MATERRESBULL.2014.10.030.
Štengl, Václav, E-mail: stengl@iic.cas.cz, Henych, Jiří, Grygar, Tomáš, & Pérez, Raúl. Chemical degradation of trimethyl phosphate as surrogate for organo-phosporus pesticides on nanostructured metal oxides. United States. doi:10.1016/J.MATERRESBULL.2014.10.030.
Štengl, Václav, E-mail: stengl@iic.cas.cz, Henych, Jiří, Grygar, Tomáš, and Pérez, Raúl. Thu . "Chemical degradation of trimethyl phosphate as surrogate for organo-phosporus pesticides on nanostructured metal oxides". United States. doi:10.1016/J.MATERRESBULL.2014.10.030.
@article{osti_22420765,
title = {Chemical degradation of trimethyl phosphate as surrogate for organo-phosporus pesticides on nanostructured metal oxides},
author = {Štengl, Václav, E-mail: stengl@iic.cas.cz and Henych, Jiří and Grygar, Tomáš and Pérez, Raúl},
abstractNote = {Nanostructured TiO{sub 2} and mixed oxides of Ti and Fe, Hf, In, Mn or Zr -were prepared by homogeneous hydrolysis of aqueous solution of metal sulphates with urea. The oxides were characterised by X-ray powder diffraction (XRD), scanning electron microscopy, particle size distribution, surface area and porosity. The oxide materials consists of a few nanometre primary crystals (mainly anatase) arranged in a few micrometre regular spherical agglomerates with specific surface area 133–511 m{sup 2} g{sup −1}. The FTIR diffuse spectroscopy was used for monitoring chemical degradation of trimethylphosphate (TMP) as a surrogate for organo-phosphorus pesticides under ambient and higher temperatures. Undoped TiO{sub 2} and Ti,Mn-mixed oxide were most active in cleavage (hydrolysis) of CH{sub 3}O from TMP at room temperature and 100 °C. Cleavage of CH{sub 3}O in the other studied mixed oxides was not complete until temperature exceeds the boiling point of TMP.},
doi = {10.1016/J.MATERRESBULL.2014.10.030},
journal = {Materials Research Bulletin},
number = ,
volume = 61,
place = {United States},
year = {Thu Jan 15 00:00:00 EST 2015},
month = {Thu Jan 15 00:00:00 EST 2015}
}