Xu Ming, Meng Sha-Sha, Cai Peiyu, Tang Wen-Qi, Yin Yun-Dong, Powell Joshua A, Zhou Hong-Cai, Gu Zhi-Yuan
Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
Department of Chemistry, Texas A&M University College Station TX 77843-3255 USA
Chem Sci. 2021 Feb 3;12(11):4104-4110. doi: 10.1039/d0sc06747d.
Modulating different stacking modes of nanoscale metal-organic frameworks (MOFs) introduces different properties and functionalities but remains a great challenge. Here, we describe a morphology engineering method to modulate the stacking modes of nanoscale NU-901. The nanoscale NU-901 is stacked through solvent removal after one-pot solvothermal synthesis, in which different morphologies from nanosheets (NS) to interpenetrated nanosheets (I-NS) and nanoparticles (NP) were obtained successfully. The stacked NU-901-NS, NU-901-I-NS, and NU-901-NP exhibited relatively aligned stacking, random stacking, and close packing, respectively. The three stacked nanoscale NU-901 exhibited different separation abilities and all showed better performance than bulk phase NU-901. Our work provides a new morphology engineering route for the modulation of the stacking modes of nano-sized MOFs and improves the separation abilities of MOFs.
调控纳米级金属有机框架（MOF）的不同堆积模式可引入不同的性质和功能，但这仍然是一个巨大的挑战。在此，我们描述了一种形态工程方法来调控纳米级NU-901的堆积模式。纳米级NU-901是在一锅溶剂热合成后通过去除溶剂进行堆积的，在此过程中成功获得了从纳米片（NS）到互穿纳米片（I-NS）和纳米颗粒（NP）的不同形态。堆积的NU-901-NS、NU-901-I-NS和NU-901-NP分别表现出相对排列的堆积、随机堆积和紧密堆积。这三种堆积的纳米级NU-901表现出不同的分离能力，并且都比块状相NU-901表现出更好的性能。我们的工作为调控纳米尺寸MOF的堆积模式提供了一条新的形态工程路线，并提高了MOF的分离能力。
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