Adsorptive removal of radioactive technetium by nanomaterials

IF 8.6 1区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Reviews in Environmental Science and Bio/Technology Pub Date : 2025-02-21 DOI:10.1007/s11157-025-09720-y

Jingyang Sun, Xiaolian Yi, Chang Yuan, Wangming Zhu, Mingjia Liao, Yiyang Ye, Dameng Liu, Huan Liu, Shuting Zhuang

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引用次数: 0

Abstract

⁹⁹Tc is primarily released in spent nuclear fuel reprocessing, mainly exists as \({\text{TcO}}_{4}^{-}\) anions in aqueous solution, while its removal still remains a challenge due to its complex chemical behavior. Among various methods, adsorption stands out for its low cost and high selectivity. This review focuses on emerging nanomaterials, including covalent organic frameworks (COFs), metal–organic frameworks (MOFs), cationic polymer networks (CPNs), MXenes, layered double hydroxides (LDHs), and nano zero-valent iron (nZVI), for ⁹⁹Tc removal through adsorption. The adsorption performance and mechanism of these nanomaterials for \({\text{TcO}}_{4}^{-}\) removal were critically reviewed. Additionally, these nanomaterials’ irradiation stability and reusability were also assessed. Finally, the challenges and future research directions are discussed, offering insights into enhancing the practical application of these materials for radioactive wastewater treatment.

Graphic abstract

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纳米材料吸附去除放射性锝

99Tc主要在乏燃料后处理过程中释放，主要以\({\text{TcO}}_{4}^{-}\)阴离子形式存在于水溶液中，但由于其复杂的化学行为，其去除仍然是一个挑战。在各种方法中，吸附法以其低成本和高选择性而脱颖而出。本文综述了用于吸附去除99Tc的新型纳米材料，包括共价有机框架（COFs）、金属有机框架（MOFs）、阳离子聚合物网络（CPNs）、MXenes、层状双氢氧化物（LDHs）和纳米零价铁（nZVI）。综述了纳米材料对\({\text{TcO}}_{4}^{-}\)的吸附性能和机理。此外，还评估了这些纳米材料的辐照稳定性和可重复使用性。最后，讨论了这些材料面临的挑战和未来的研究方向，为加强这些材料在放射性废水处理中的实际应用提供了见解。图形摘要

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来源期刊

Reviews in Environmental Science and Bio/Technology Environmental Science-Waste Management and Disposal

CiteScore

25.00

自引率

1.40%

发文量

审稿时长

4.5 months

期刊介绍： Reviews in Environmental Science and Bio/Technology is a publication that offers easily comprehensible, reliable, and well-rounded perspectives and evaluations in the realm of environmental science and (bio)technology. It disseminates the most recent progressions and timely compilations of groundbreaking scientific discoveries, technological advancements, practical applications, policy developments, and societal concerns encompassing all facets of environmental science and (bio)technology. Furthermore, it tackles broader aspects beyond the natural sciences, incorporating subjects such as education, funding, policy-making, intellectual property, and societal influence.