Flux Method Growth and Structural Analysis of Two Tetravalent Uranium Orthophosphate Single Crystals, Cs2UIV(PO4)2 and Isostructural Cs2(UIV0.75CeIV0.25)(PO4)2

Yu Wang; Xiaochen Zhang; Lanxin Li; Tao Bo; Lei Zhang

doi:10.1021/acs.inorgchem.4c02468

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Flux Method Growth and Structural Analysis of Two Tetravalent Uranium Orthophosphate Single Crystals, Cs₂U^IV(PO₄)₂ and Isostructural Cs₂(U^IV_0.75Ce^IV_0.25)(PO₄)₂

Yu Wang Xiaochen Zhang Lanxin Li Tao Bo Lei Zhang

Year: 2024 Journal: Inorganic Chemistry Vol: 63 (38)Pages: 17340-17345 Publisher: American Chemical Society

DOI: 10.1021/acs.inorgchem.4c02468

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Abstract

Two novel uranium(IV) orthophosphate framework compounds were obtained by the high-temperature flux method in CsCl-CsF eutectic salt. Cs₂U^IV(PO₄)₂ (1) and isostructural Cs₂(U^IV_0.75Ce^IV_0.25)(PO₄)₂ (2) are tetragonal structures bridged by (U/Ce)^IV-O octacoordinated dodecahedra and PO₄ tetrahedra, with Cs⁺ cations filling in the channels. The crystal structures exhibit good structural and thermal stability with a potential capacity to immobilize tetravalent radionuclides.

Keywords:

Isostructural Chemistry Uranium Eutectic system Flux (metallurgy) Flux method Crystallography Salt (chemistry) Inorganic chemistry Nuclear chemistry Analytical Chemistry (journal) Physical chemistry Crystal structure Single crystal Metallurgy Chromatography

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Nuclear materials and radiation effects

Physical Sciences → Materials Science → Materials Chemistry

Radioactive element chemistry and processing

Physical Sciences → Chemistry → Inorganic Chemistry

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Physical Sciences → Environmental Science → Industrial and Manufacturing Engineering

Flux Method Growth and Structural Analysis of Two Tetravalent Uranium Orthophosphate Single Crystals, Cs₂U^IV(PO₄)₂ and Isostructural Cs₂(U^IV_0.75Ce^IV_0.25)(PO₄)₂

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