Abstract:

With the acceleration of industrialization, the extraction and enrichment of bromine and iodine ions from seawater brines, as well as the removal of halide ions from domestic water bodies, have become increasingly critical issues of concern. Metal-organic frameworks (MOFs), characterized by their exceptional high surface area, tunable porosity, and customizable functional sites, have shown significant promise in the adsorptive sequestration of halide ions. This review endeavored to delineate the application potential and research advancements of MOFs in the adsorptive separation of inorganic halide ions, including fluoride, chloride, bromide and iodide. The manuscript commences with an overview of the classifications, physicochemical attributes, and synthetic strategies of MOFs, such as solvothermal synthesis, microwave/ultrasound-assisted synthesis and room-temperature mixing methods. It proceeded with a systematic retrospective on the adsorptive capacities of MOFs for various halide ions, an analysis of the determinants affecting their adsorptive performance, and an elucidation of the intrinsic mechanisms underpinning the adsorption processes. Despite the substantial progress achieved in the adsorption of halide ions using MOFs, challenges persisted in terms of stability, reusability, and scalability for industrial applications. Ultimately, this review offered prescriptive recommendations for future research directions in MOF material design, stability enhancement and the technological development for industrial applications with the aspiration to contribute novel solutions to the realms of environmental conservation and resource recycling.

Key words: metal-organic framework materials, halogen ion, adsorption performance, adsorption mechanism

摘要：

随着工业化进程的加速，海水卤水中溴、碘离子的提取富集，以及生活水体中卤素离子的去除等问题愈发引起人们的关注。金属有机骨架（MOFs）材料以其独特的高比表面积、可调节的孔隙结构和功能化位点，在卤素离子的吸附领域展现出显著优势。本文旨在探讨MOFs在吸附分离无机卤素离子（包括氟离子、氯离子、溴离子和碘离子）方面的应用潜力和研究进展。文中首先概述了MOFs的分类、理化特性及其制备方法，包括溶剂热法、微波/超声法、室温搅拌法等。随后，系统回顾了MOFs对不同卤素离子的吸附效能，分析了影响其吸附性能的关键因素，并阐述了吸附过程中的潜在机理。尽管MOFs在卤素离子吸附方面取得了重要进展，但仍面临稳定性、可再生性和工业化应用等挑战。最后，本文提出了对未来MOFs材料设计、稳定性研究以及工业化应用技术研究的建议，以期为环境保护和资源回收领域提供新方案。

关键词: 金属-有机骨架材料, 卤素离子, 吸附性能, 吸附机理