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Synthesis of Zn-based metal–organic frameworks in ionic liquid microemulsions at room temperature

机译：室温下离子液体微乳液中锌基金属有机骨架的合成

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For the first time, Zn-metal–organic frameworks (Zn-MOFs) were prepared using Zn ~(2+) and the aromatic ligand 1,3,5-benzenetricarboxylic acid (BTC) in ionic liquid microemulsions stabilized by the surfactant TX-100. This proposed environmentally friendly approach to synthesize Zn-MOFs is simple, requires no energy input, and operates at room temperature. The synthesized Zn-MOFs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), single crystal X-ray diffraction and powder X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FT-IR). The results showed that two different Zn-MOF crystals had been successfully synthesized and that [NaZn(C _(9) H _(3) O _(6) )(H _(2) O) _(4) ]·1.5H _(2) O was prepared by using this method for the first time. The influence of different parameters such as the pH value, the ratio of reactants, and reaction time on the morphology and size of the Zn-MOFs was studied. Long rod Zn-MOFs with an average size of ～25 μm could be obtained in the ionic liquid microemulsions with a molar ratio (organic ligand to metal ion) of 1?:?1 at pH 5.98 for 24 h. The crystal type and morphology of the Zn-MOFs could be controlled by the ionic liquid microemulsions at room temperature. This green synthesis method can be used to study their industrial production.
机译：首次在表面活性剂TX-稳定的离子液体微乳液中，使用Zn〜（2+）和芳香族配体1,3,5-苯三甲酸（BTC）制备了Zn-MOFs。 100提出的这种环保的合成Zn-MOFs的方法很简单，不需要能量输入，并且可以在室温下运行。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），单晶X射线衍射和粉末X射线衍射（XRD），热重分析（TGA）和傅里叶变换红外光谱对合成的Zn-MOF进行表征（FT-IR）。结果表明，已经成功合成了两种不同的Zn-MOF晶体，[NaZn（C _（9）H _（3）O _（6））（H _（2）O）_（4）]·1.5首次使用该方法制备了H_（2）O。研究了pH，反应物配比，反应时间等参数对Zn-MOFs的形貌和尺寸的影响。在离子液体微乳液中，在pH 5.98的条件下（有机配体与金属离子的摩尔比）为1？：？1的离子液体微乳液中，可以得到平均粒径约为25μm的长棒Zn-MOF，持续24 h。 Zn-MOFs的晶体类型和形态可以在室温下通过离子液体微乳来控制。这种绿色合成方法可用于研究其工业生产。

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