ACM@Ni阴极高效电化学去除铀（ⅵ）：性能与机理

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-02-01 DOI:10.1007/s10967-025-10007-3

Xujia Wu, Xinyu Zhao, Lijie Chen, Jing Sun, Zhongran Dai

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引用次数: 0

摘要

本文制备了一种新型的偕胺肟纤维素微球（ACM@Ni）负载泡沫镍复合正极材料。在298.15 K、pH = 4、1.2 V条件下，4 h内对U（VI）的去除率可达95%，比物理吸附快5倍。铀（VI）的吸附数据符合准一级动力学和Freundlich等温线模型，揭示了铀在ACM-5@Ni阴极上的多层化学吸附过程。此外，ACM-5@Ni电极材料在含铀废水的实际处理中也具有潜在的应用前景。XRD和XPS研究表明，ACM-5@Ni阴极吸附的U（VI）在脱铀过程中被还原为U（IV）。

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Efficient electrochemical removal of uranium(VI) by ACM@Ni cathode: Performance and mechanism

Herein, a novel composite cathode material of Ni foam supported by amidoxime cellulose microspheres (ACM@Ni) has been prepared. The removal rate of U(VI) can reach 95% within 4 h under the conditions of 298.15 K, pH = 4 and 1.2 V, which was 5 times faster than the physical adsorption. The adsorption data of U(VI) were consistent with the quasi-first-order kinetic and Freundlich isotherm model, revealing the multilayer chemisorption process of uranium on the ACM-5@Ni cathode. In addition, ACM-5@Ni electrode materials also have potential application prospects in the actual treatment of uranium containing wastewater. XRD and XPS studies show that the U(VI) adsorbed by ACM-5@Ni cathode was reduced to U(IV) in the process of uranium removal.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.