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Nova Biotechnologica et Chimica

The Journal of University of SS. Cyril and Methodius

2 Issues per year


CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2015: 0.129
Source Normalized Impact per Paper (SNIP) 2015: 0.044

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ISSN
1338-6905
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Some Environmentally Relevant Reactions of Cerium Oxide

Pavel Janoš
  • Faculty of the Environment, University of Jan Evangelista Purkyně, Králova Výšina 7, 40096 Ústí nad Labem, Czech Republic (
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/ Jakub Ederer
  • Faculty of the Environment, University of Jan Evangelista Purkyně, Králova Výšina 7, 40096 Ústí nad Labem, Czech Republic
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/ Marek Došek
  • Faculty of the Environment, University of Jan Evangelista Purkyně, Králova Výšina 7, 40096 Ústí nad Labem, Czech Republic
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Published Online: 2015-02-06 | DOI: https://doi.org/10.1515/nbec-2015-0005

Abstract

Reactive forms of cerium oxide were prepared by a thermal decomposition of various precursors, namely carbonates, oxalates and citrates, commercially available nanocrystalline cerium oxide (nanoceria) was involved in the study for comparison. Scanning electron microscopy (SEM) and x-ray diffraction analysis (XRD) were used to examine the morphology and crystallinity of the samples, respectively, whereas the Brunauer-Emmett-Teller (BET) method of nitrogen adsorption was used to determine surface areas. Interactions of cerium oxide with some phosphorus-containing compounds were investigated. Some of the examined samples, especially those prepared by annealing from carbonate precursors, exhibited an outstanding ability to destroy highly toxic organophosphates, such as pesticides (parathion methyl), or nerve agents (soman, VX). There were identified some relations between the degradation efficiency of cerium oxides and their crystallinity. It was also shown that cerium oxide is able to destroy one of widely used flame retardants - triphenyl phosphate. A phosphatase-mimetic activity of various cerium oxides was examined with the aid of a standardized phosphatase test.

Keywords : cerium oxide; reactive sorbent; toxic organophosphates; chemical warfare agents

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About the article

Published Online: 2015-02-06

Published in Print: 2014-12-01


Citation Information: Nova Biotechnologica et Chimica, ISSN (Online) 1338-6905, DOI: https://doi.org/10.1515/nbec-2015-0005.

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© by Pavel Janoš. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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