Published April 30, 2022
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Nanofibers of solid-solution thorium(IV)-uranium(IV) oxides by electrospinning
- 1. Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-61137 Brno, Czech Republic
Description
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
Notes
We acknowledge the Cryo-Electron Microscopy and Tomography Core Facility of CIISB, Instruct-CZ centre, supported by MEYS Czech Republic (LM2018127). CzechNanoLab project LM2018110, funded by the MEYS Czech Republic, is gratefully acknowledged for the financial support of the measurements/sample fabrication at CEITEC Nano Research Infrastructure. This research has been financially supported by the Horizon 2020 Research and Innovation Program under grant agreement no. 810626 (SINNCE).
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