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首页> 外文期刊>ChemPlusChem >The Effect of Hydrogen Peroxide on the Synthesis of Terephthalate‐Based Metal‐Organic Frameworks
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The Effect of Hydrogen Peroxide on the Synthesis of Terephthalate‐Based Metal‐Organic Frameworks

机译：过氧化氢对对苯二甲酸酯的金属有机框架合成的影响

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摘要

Abstract Metal‐organic frameworks (MOFs) are versatile materials for applications in fields including the environment, energy and health. A synthetic route for improving the formation of MOFs has been developed and is triggered by hydrogen peroxide (H 2 O 2 ) to promote the formation of terephthalate‐based MOFs of MIL‐53 and MIL‐68 types, specifically those made from Fe 3+ and Al 3+ and mixtures of both. Different characterization techniques (TGA, XRD, SEM, TEM, N 2 porosimetry and Raman, mass and NMR spectroscopies) gave insights into the effect of H 2 O 2 on the MOF synthesis. The reaction yield was significantly improved (the highest yield being 74?% for MIL‐53(Al)), while crystallinity and N 2 adsorption properties were mostly maintained for phases based on Al and Al/Fe. Furthermore, a reaction mechanism was envisaged from the mass spectroscopic analysis of the reaction solutions, thus suggesting that H 2 O 2 plays the role of a μ‐hydroxo bridge promoter, favoring the link between terephthalate ligands and aluminum‐containing species to give rise to the μ‐carboxylate bridges, leading to a faster growth of the final MOF, and offering a novel MOF synthesis approach.
机译：摘要金属有机框架（MOF）是在包括环境，能源和健康的领域应用的多功能材料。已经开发了一种改善MOF的形成的合成途径，并由过氧化氢（H 2 O 2）引发，以促进MIL-53和MIL-68型丙二醇酯的形成，特别是由Fe 3+制成的苯甲酸酯的MOF。和3+和两者的混合物。不同的表征技术（TGA，XRD，SEM，TEM，N 2孔隙率和拉曼，质量和NMR光谱）对H 2 O 2对MOF合成的影响进行了洞察。反应产率显着改善（最高产率为MIL-53（Al）），而基于Al和Al / Fe的相，主要保持结晶度和N 2吸附性能。此外，从反应溶液的质谱分析设想了反应机理，因此表明H 2 O 2起到μ-羟基桥梁启动子的作用，最有利于对苯二甲酸酯配体和含铝物种之间的联系产生μ-羧酸盐桥，导致最终MOF的增长更快，并提供新的MOF合成方法。

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