Improved performance of the pyrimidine-modified porous In-MOF and an in situ prepared composite Ag@In-MOF material,Chemical Communications

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Improved performance of the pyrimidine-modified porous In-MOF and an in situ prepared composite Ag@In-MOF material
Chemical Communications ( IF 4.3 ) Pub Date : 2022-06-22 , DOI: 10.1039/d2cc02639b
Jing Jin ₁ , Juanjuan Xue ₁ , Dan Wu ₁ , Guoping Yang ₁ , Yaoyu Wang ₁

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A stable porous In-MOF 1 was prepared for the first time via an asymmetric N,O-containing (2-pyrimidin-5-yl)terephthalic acid (H₂L). It was found that the 1,4-benzenedicarboxylate anions (bdc²⁻) were formed in the synthesis process of 1. Thus, another new isomorphic In-MOF 2 was formed by employing the H₂bdc ligand in the synthesis process of 1. More importantly, when adding AgNO₃ in the synthesis process of 1 and 2, only composite Ag@1 was obtained via the in situ reduction of Ag(I) to Ag NPs without additional reducing agent. MOF 1 and Ag@1 had great sorption capacity; in particular, 1 had remarkable dynamic selectivity for C₂H₂/CH₄ and CO₂/CH₄, and they were also efficient catalysts for fixing CO₂ and epoxides. It is hoped that this work may supply an effective strategy to build stable MOFs and composite Ag@MOF materials with excellent multifunctional applications.

中文翻译：

嘧啶改性多孔 In-MOF 和原位制备的复合 Ag@In-MOF 材料的性能改进

首次通过不对称的含 N,O 的 (2-pyrimidin-5-yl) 对苯二甲酸 (H ₂ L)制备了稳定的多孔 In-MOF 1 。发现在 1 的合成过程中形成了 1,4-苯二羧酸根阴离子 ( bdc 2- ⁾。因此，通过在1的合成过程中使用H ₂ bdc 配体，形成了另一种新的同晶In-MOF 2。更重要的是，当在1和2的合成过程中加入 AgNO ₃时，仅通过原位获得复合 Ag@ 1在没有额外还原剂的情况下将 Ag( I ) 还原为 Ag NPs。MOF 1和Ag@ 1吸附能力强；特别是1对C ₂ H ₂ /CH ₄和CO ₂ /CH ₄具有显着的动态选择性，也是固定CO ₂和环氧化物的高效催化剂。希望这项工作可以为构建稳定的 MOFs 和具有优异多功能应用的复合 Ag@MOF 材料提供有效的策略。

更新日期：2022-06-22

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