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Nanostructured magnetite-ceria-based composite: Synthesis, calcination, properties, and applications
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SYSNO ASEP 0558217 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanostructured magnetite-ceria-based composite: Synthesis, calcination, properties, and applications Author(s) Jirásková, Yvonna (UFM-A) RID, ORCID
Buršík, Jiří (UFM-A) RID, ORCID
Životský, O. (CZ)
Luňáček, J. (CZ)
Alexa, P. (CZ)
Uhlař, R. (CZ)
Ederer, J. (CZ)
Janos, P. (CZ)Number of authors 8 Article number 165481 Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 916, SEP (2022)Number of pages 12 s. Language eng - English Country CH - Switzerland Keywords nuclear-data sheets ; particle-systems ; reactive sorbent ; parathion methyl ; degradation ; dioxide ; ceo2 ; transformations ; hematite ; behavior ; Ceria ; Iron-oxides ; Microstructure ; Magnetic properties ; M?ssbauer spectrometry Subject RIV JG - Metallurgy OECD category Materials engineering R&D Projects EF17_048/0007399 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000806937400004 EID SCOPUS 85133920924 DOI 10.1016/j.jallcom.2022.165481 Annotation Magnetite and magnetite/ceria composites prepared by chemical procedures in various mutual ratios were exposed to calcination treatment in a temperature interval between 473 K and 1073 K. A combination of several experimental methods has provided detailed structural, phase, and magnetic properties utilisable for selection of optimal compositions and calcination conditions from the viewpoint of degradation ability tested using parathion methyl and paraoxon. It was shown that the ceria content, selected between 5 wt% and 50 wt%, influences magnetic properties. Its optimal amount was determined to be above 20 wt% and the calcination temperature of 773 K when the highest rate constant, slightly above 0.06 min-1, was obtained for parathion methyl in acetonitrile using a degradation test. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0925838822018722?via%3Dihub
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