Neglected solid phase pentavalent plutonium carbonate in the environment†

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-09-04 DOI:10.1039/D4EN00283K

Anastasiia S. Kuzenkova, Tatiana V. Plakhova, Roman D. Svetogorov, Elizaveta S. Kulikova, Alexander L. Trigub, Vasily O. Yapaskurt, Alexander V. Egorov, Andrey S. Toropov, Alexey A. Averin, Maria D. Shaulskaya, Dmitry M. Tsymbarenko, Anna Yu. Romanchuk and Stepan N. Kalmykov

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引用次数: 0

Abstract

KPuO₂CO₃ solid phase precipitation from hexavalent plutonium (Pu(VI)) solution is discussed herein. The kinetic process of Pu(V)/potassium carbonate formation is widely investigated under constant control of Pu concentration in different oxidation states, redox potentials, and pH values. Synchrotron-based X-ray diffraction, X-ray absorption spectroscopy, high-resolution transmission electron microscopy, and scanning electron microscopy with energy-dispersive X-ray spectroscopy are employed for solid phase analysis. The crystal structure of KPuO₂CO₃ is specified via the Rietveld method and extended X-ray absorption fine structure fitting. The stability area of Pu(V) potassium carbonate is discussed and a moderated Pourbaix diagram is presented.

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环境中被忽视的固相五价碳酸钚

本文讨论了六价钚（Pu(VI)）溶液中的 KPuO2CO3 固相沉淀。在恒定控制不同氧化态、氧化还原电位和 pH 值下的钚浓度的条件下，广泛研究了钚（V）/碳酸钾形成的动力学过程。固相分析采用了同步辐射 X 射线衍射、X 射线吸收光谱、高分辨率透射电子显微镜和扫描电子显微镜与能量色散 X 射线光谱。通过里特维尔德法和扩展 X 射线吸收精细结构拟合，确定了 KPuO2CO3 的晶体结构。讨论了钚（V）碳酸钾的稳定区，并给出了一个缓和的 Pourbaix 图。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.