journal article·2020-12Open access

Short communication on further elucidating the structure of amorphous U2O7 by extended X-ray absorption spectroscopy and DFT simulations

Nathan B.A. Thompson, Simon C. Middleburgh, Lee J. Evitts, Matthew R. Gilbert, Martin C. Stennett, Neil C. Hyatt

Abstract

The structure of amorphous U2O7 has been examined by extended x-ray absorption near edge spectroscopy (EXAFS) and modelled using density functional theory (DFT) simulations. A hybridised metastudtite-UO3 structure is proposed, consisting of peroxide bonds (O-Operoxo), uranyl units (U=Oyl) and U-O bonding. Experimental and simulated X-ray diffraction (XRD) is used to confirm the proposed structure.
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Research context

OpenAlex topics: Radioactive element chemistry and processing · Nuclear Materials and Properties · Nuclear materials and radiation effects

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