Directional growth and reconstruction of ultrafine uranium oxide nanorods within single-walled carbon nanotubes.

ABSTRACT: Understanding the atomic structures and dynamic evolution of uranium oxides is crucial for the reliable operation of fission reactors. Among them, U₄O₉-as an important intermediate in the oxidation of UO₂ to UO_2+x -plays an important role in the nucleation and conversion of uranium oxides. Herein, we realize the confined assembly of uranyl within SWCNTs in liquid phase and reveal the directional growth and reconstruction of U₄O₉ nanorods in nanochannels, enabled by in situ scanning transmission electron microscopy (STEM) e-beam stimulation. The nucleation and crystallization of U₄O₉ nanorods in nanochannels obey the "non-classical nucleation" mechanism and exhibit remarkably higher growth

SUBMITTER: Zhang L 

PROVIDER: S-EPMC11382540 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature