Nanofibers of solid-solution thorium(IV)-uranium(IV) oxides by electrospinning

KUNDRÁT, Vojtěch, Vít VYKOUKAL, Zdeněk MORAVEC and Jiří PINKAS. Nanofibers of solid-solution thorium(IV)-uranium(IV) oxides by electrospinning. Journal of Nuclear Materials. Elsevier B.V., 2022, vol. 566, August, p. 1-8. ISSN 0022-3115. Available from: https://dx.doi.org/10.1016/j.jnucmat.2022.153731.

Basic information

• Original name: Nanofibers of solid-solution thorium(IV)-uranium(IV) oxides by electrospinning
• Authors: KUNDRÁT, Vojtěch (203 Czech Republic, belonging to the institution), Vít VYKOUKAL (203 Czech Republic, belonging to the institution), Zdeněk MORAVEC (203 Czech Republic, belonging to the institution) and Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution).
• Edition: Journal of Nuclear Materials, Elsevier B.V. 2022, 0022-3115.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10402 Inorganic and nuclear chemistry
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 3.100
• RIV identification code: RIV/00216224:14310/22:00125903
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.jnucmat.2022.153731
• UT WoS: 000805635200001
• Keywords in English: Electrospinning; Thorium; Uranium; Mixed oxide; Nanofibers; Polyvinylpyrrolidone
• Tags: CF CRYO, rivok
• Tags: International impact, Reviewed

Abstract

Thorium-uranium dioxide nanofibers were prepared in a three-step process. Green composite microfibers were electrospun from solutions composed of Th(IV) and U(VI) acetylacetonate complexes in different molar ratios, polyvinylpyrrolidone, and acetone/ethanol mixed solvents. The second step converted the green composite fibers by calcination in the air to mixed Th/U oxide fibers. In the final step, the heat treatment under forming gas provided the nanofibers with diameters of 28−46 nm composed of solid solutions ThxU1−xO2 (x = 1, 0.75, 0.5, 0.25, 0). The XRD and STEM-EDS analyses of the prepared Th/U mixed oxide nanofibers attested to their atomic homogeneity.

Links

• LM2018127, research and development project: Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)

Investor: Ministry of Education, Youth and Sports of the CR

• 90110, large research infrastructures: Name: CzechNanoLab