Nanostructured magnetite-ceria-based composite: Synthesis, calcination, properties, and applications

0558217 - ÚFM 2023 RIV CH eng J - Journal Article
Jirásková, Yvonna - Buršík, Jiří - Životský, O. - Luňáček, J. - Alexa, P. - Uhlař, R. - Ederer, J. - Janos, P.
Nanostructured magnetite-ceria-based composite: Synthesis, calcination, properties, and applications.
Journal of Alloys and Compounds. Roč. 916, SEP (2022), č. článku 165481. ISSN 0925-8388. E-ISSN 1873-4669
R&D Projects: GA MŠMT(CZ) EF17_048/0007399
Institutional support: RVO:68081723
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
OECD category: Materials engineering
Impact factor: 6.2, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0925838822018722?via%3Dihub

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.
Permanent Link: http://hdl.handle.net/11104/0332266