存在复合无机阴离子时金红石对 Eu（III）的吸附：宏观和光谱联合研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-24 DOI:10.1007/s10967-024-09711-3

Wanqiang Zhou, Yao Li, Chunli Liu

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引用次数: 0

摘要

了解铕的地球化学行为对安全处置放射性废物非常重要。络合无机阴离子在处置库环境中无处不在，会对铕的吸附行为产生重大影响。这项工作全面研究了络合无机阴离子存在时金红石对 Eu（III）的吸附。结果表明，硫酸盐和碳酸盐对 Eu(III)的吸附影响微乎其微，而磷酸盐则能强烈增强吸附。光谱结果表明，在酸性条件下，磷酸盐会通过在金红石表面形成磷酸盐桥接复合物来增强对 Eu（III）的吸附，而在碱性条件下，磷酸盐会通过表面沉淀来促进吸附。

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Adsorption of Eu(III) on rutile in the presence of complexing inorganic anions: a combined macroscopic and spectroscopic investigation

Knowledge of the geochemical behavior of europium is important for the safe disposal of radioactive wastes. Complexing inorganic anions are ubiquitous in repository environments and can affect europium adsorption behaviors significantly. This work comprehensively studied the Eu(III) adsorption on rutile in the presence of complexing inorganic anions. Our results indicated that sulfate and carbonate had a negligible impact on Eu(III) adsorption, while phosphate could strongly enhance the adsorption. The spectral results suggested that phosphate would enhance Eu(III) adsorption by forming a phosphate-bridged complex on rutile surface under acidic conditions, while promoting adsorption by surface precipitation under alkaline conditions.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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