Adsorption mechanism of Eu onto newly synthesized fluorous-compound-impregnating adsorbent

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-07-03 DOI:10.1016/j.nimb.2024.165448

Yoichi Arai , Sou Watanabe , Masayuki Watanabe , Tsuyoshi Arai , Kenta Katsuki , Tomohiro Agou , Hisaharu Fujikawa , Keisuke Takeda , Hiroki Fukumoto , Hiroyuki Hoshina , Noriaki Seko , Yuma Chikamatsu , Naoto Hagura

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Abstract

Radioactive liquid waste containing nuclear fuel materials and chemical reagents is stored in nuclear facilities. To eliminate the radioactivity of the radioactive liquid waste, we developed RFIDA, a new perfluoroalkyl (RF)-based ligand with a basic structure of iminodiacetic acid (IDA). In this study, a solvent extraction test was conducted to confirm that the synthesized RFIDA adsorbs cations, and an adsorption test was conducted by impregnating RFIDA into porous silica with a polymer. To understand the adsorption mechanism, the adsorption of Eu on RFIDA and the coordination status of RFIDA with Eu-bearing functional groups were analyzed by particle-induced X-ray emission (PIXE) and ion beam-induced luminescence (IBIL) analyses, respectively. The PIXE analysis revealed the adsorption performance of RFIDA. The complex status of Eu was investigated using IBIL analysis, and the results showed that Eu and NO₃⁻ possibly coordinated with the functional group. The solid adsorbent impregnated with RFIDA also complexes with Eu in the same chemical form as in solvent extraction.

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新合成的氟复合浸渍吸附剂对 Eu 的吸附机理

核设施中储存着含有核燃料材料和化学试剂的放射性液体废物。为了消除放射性液体废料的放射性，我们开发了 RFIDA，一种以亚胺二乙酸（IDA）为基本结构的新型全氟烷基（RF）配体。本研究通过溶剂萃取试验确认了合成的 RFIDA 可吸附阳离子，并通过将 RFIDA 与聚合物浸渍到多孔二氧化硅中进行了吸附试验。为了解吸附机理，分别采用粒子诱导 X 射线发射（PIXE）和离子束诱导发光（IBIL）分析了 Eu 在 RFIDA 上的吸附情况以及 RFIDA 与含 Eu 功能基团的配位状况。PIXE 分析显示了 RFIDA 的吸附性能。利用 IBIL 分析研究了 Eu 的络合状态，结果表明 Eu 和 NO3- 可能与官能团配位。浸渍了 RFIDA 的固体吸附剂也以与溶剂萃取相同的化学形式与 Eu 发生络合。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.