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首页> 外文期刊>Crystal growth & design >Complete characterization of α-hopeite microparticles: An ideal nucleation seed for metal organic frameworks
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Complete characterization of α-hopeite microparticles: An ideal nucleation seed for metal organic frameworks

机译：α-陨石微粒的完整表征：金属有机骨架的理想成核种子

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摘要

This work reports on the structural and microstructural characterization of a new class of α-hopeite microparticles, which has recently been discovered as ideal seeding agents for the formation and functionalization of metal organic framework (MOF-5) crystals. The particles have been named desert rose microparticles (DRMs), as their morphology closely resembles that of the famous gypsum and Barite mineral. The DRMs form directly inside the MOF-5 precursor solution when a block copolymer surfactant, Pluronic F-127, is added in specific amounts. The particles formation is remarkably fast, and particles are observed to form within the first minute of reaction. The DRMs formation and growth has been monitored along a 3 h synthesis, until the first nuclei of MOF-5 start to appear on their surface. Electron microscopy, energy dispersive analysis, electron diffraction, FTIR, FT-Raman, and BET give an all-around description of the chemical and morphological features that give the DRMs their remarkable MOF-seeding capacity.
机译：这项工作报告了新型α-陨石微粒的结构和微观结构表征，最近发现它们是金属有机骨架（MOF-5）晶体形成和功能化的理想晶种剂。这些粒子被称为沙漠玫瑰微粒（DRM），因为它们的形态与著名的石膏和重晶石矿物的形态极为相似。当以特定量添加嵌段共聚物表面活性剂Pluronic F-127时，DRM会直接在MOF-5前体溶液内部形成。颗粒形成非常快，并且观察到在反应的第一分钟内形成了颗粒。在3小时的合成过程中一直监测DRM的形成和生长，直到MOF-5的第一个核开始出现在它们的表面上。电子显微镜，能量色散分析，电子衍射，FTIR，FT-Raman和BET全面描述了化学和形态特征，从而赋予了DRM出色的MOF播种能力。

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