文献类型：期刊文献

英文题名：Efficient elimination of U(VI), Th(IV) and Eu(III) from nuclear waste using MXenes-derived three-dimensional metal organic frameworks: Performance evaluation and mechanism insight

作者：Liu, Fenglei[1];Li, Zhihao[1];Tang, Lanqi[1];Wu, Chenxi[1];Xia, Fang[1];Hu, Baowei[1]

机构：[1]Shaoxing Univ, Sch Life & Environm Sci, Huancheng West Rd 508, Shaoxing 312000, Peoples R China

年份：2025

卷号：364

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001445659900001)、、EI(收录号：20251118024498)、Scopus(收录号：2-s2.0-86000583472)、WOS

基金：This research was supported by Zhejiang Provincial Natural Science Foundation of China under Grant No. LQ23B060002 and Shaoxing City science and technology plan project under Grant No. 2023A11010.

语种：英文

外文关键词：Metal-organic framework; MXenes; U(VI); Th(IV); Eu(III)

外文摘要：With the rapid development of nuclear power industry, the treatment of radioactive contamination had attracted more and more attention. Herein, the two-dimensional Ti3C2Tx MXenes were used as precursors to fabricate three-dimensional catechol-based MOFs (TiCu-HHTP) under the assistance of Cu(II) ions. The synthesis mechanism suggested that electrons were transferred from Ti3C2Tx to the electrostatically adsorbed Cu(II) ion for redox reaction, followed by Ti-C bond break to release Ti(IV) ion, and continuous chelation coordination of Ti (IV)/Cu(II) with HHTP. Batch experiment demonstrated that the maximum extraction capacity for U(VI), Th(IV) and Eu(III) on TiCu-HHTP were estimated to be 343.4, 85.7 and 96.7 mg/g, respectively, which were related to the single-layer chemisorption process. Meanwhile, kinetic studies have found that there was a synergy between diffusion control and mass transfer control. More importantly, TiCu-HHTP basically maintained its adsorption ability against radionuclides after three regeneration cycles. Mechanism analysis manifested that the excellent collection capacity was ascribed to the coordination and Lewis acid-base interaction between radionuclides and TiCu-HHTP. Thus, this TiCu-HHTP was not only a promising remediation agent, but also could provide some guidance in nuclear waste management.