A Pyridine-Containing 3D Metal-Organic Framework for Iodine Capture.

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-10-03 DOI:10.1021/acs.inorgchem.5c02884

Chongbo Qi,Yicen Liu,Zhongyue Li,Zhenyu Li,Lei Yang,Yuyu Jia

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Abstract

The effective capture of radioactive iodine (I2) is crucial for the sustainable development of nuclear energy. Functionalized metal-organic frameworks have demonstrated broad applicability in gas adsorption, with I2 capture receiving significant attention in recent studies. In this study, we report a pyridine-containing zinc-based MOF (Zn-MOF-bpe) synthesized via a straightforward one-step hydrothermal method. Benefiting from the nitrogen-rich pyridine functionalities, this material exhibits exceptional performance in vapor I2 adsorption with a capacity of 4.49 g g-1 at 75 °C. We investigated the thermal stability of Zn-MOF-bpe, along with its iodine adsorption performance under varying temperature and humidity conditions and its retention capacity and recyclability after I2 adsorption. The results demonstrate the material's outstanding iodine capture performance. Furthermore, the Zn-MOF-bpe/PVP nanofiber membrane was successfully fabricated on porous Al2O3 ceramics using electrospinning technology, demonstrating its effective application in I2 adsorption. The incorporated nitrogen active sites not only enhance the interactions between the adsorbent and I2 but also facilitate the conversion of I2 to polyiodides. The outstanding adsorption performance of Zn-MOF-bpe provides a rational pathway for developing high-efficiency MOF-based I2 capture materials.

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一种用于碘捕获的含吡啶三维金属有机框架。

有效捕获放射性碘（I2）对核能的可持续发展至关重要。功能化金属有机框架在气体吸附中具有广泛的适用性，I2捕获在最近的研究中受到了极大的关注。在这项研究中，我们报道了一种含吡啶的锌基MOF （Zn-MOF-bpe）通过简单的一步水热法合成。得益于富氮吡啶功能，该材料在75°C下具有4.49 g g-1的蒸气I2吸附能力。研究了Zn-MOF-bpe在不同温度和湿度条件下的热稳定性、碘吸附性能以及I2吸附后的保留能力和可回收性。结果表明，该材料具有优异的碘捕获性能。此外，利用静电纺丝技术在多孔Al2O3陶瓷上成功制备了Zn-MOF-bpe/PVP纳米纤维膜，证明了其在I2吸附中的有效应用。加入的氮活性位点不仅增强了吸附剂与I2的相互作用，而且促进了I2向多碘化物的转化。Zn-MOF-bpe优异的吸附性能为开发高效的mof基I2捕集材料提供了合理的途径。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.