高效吸附碘的氟化星形共价有机框架

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2024-09-21 DOI:10.1016/j.jssc.2024.125025

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引用次数: 0

摘要

共价有机框架（COF）具有独特的性能，被广泛用于气态放射性碘捕获。本研究设计并构建了二维氟化亚胺 COF（JLNU-316）。JLNU-316 的 BET 表面积为 596.25 mg2/g，孔径为 2.74 和 3.78 nm，具有良好的热稳定性和化学稳定性。JLNU-316 的碘吸附量达到 4.08 g/g，超过了目前大多数含氟多孔碘吸附材料。此外，JLNU-316 在空气中暴露七天后，碘吸附容量仍能保持在 99%，并且在十次循环后仍能保持稳定的性能。杂原子的引入增强了 JLNU-316 的稳定性，丰富了吸附位点，从而提高了碘的吸附能力。这项研究为设计和制备新型碘吸附剂提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A fluorinated star-shaped covalent organic framework for efficient iodine adsorption

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A fluorinated star-shaped covalent organic framework for efficient iodine adsorption

Covalent organic frameworks (COFs) are widely used for gaseous radioiodine capture through distinctive properties. Herein, 2D fluorinated imine COF (JLNU-316) was designed and constructed in this study. JLNU-316 exhibited large BET surface area of 596.25 mg²/g and pore size (2.74 and 3.78 nm), excellent thermal and chemical stability. The adsorption of iodine by JLNU-316 reached 4.08 g/g, which exceeded most of the current fluorine-containing porous iodine adsorption materials. Furthermore, the iodine adsorption capacity remains at 99 % after seven days of exposure to air conditions, and JLNU-316 maintains stable performance following ten cycles. The introduction of heteroatoms enhanced the stability of JLNU-316 and enriched the adsorption sites, thereby increasing the iodine adsorption capacity. This study guides for the design and preparation of novel iodine adsorbents.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.