State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, P. R. China.
Dalton Trans. 2019 Apr 2;48(14):4650-4656. doi: 10.1039/c9dt00813f.
Metal-organic frameworks (MOFs) are an exciting class of porous crystallized materials, which have attracted great interest in sustainable energy and environmental remediation. Magnetite (Fe3O4) is one of the best-known magnetic materials and has been extensively studied with respect to properties involving high saturation magnetization, biocompatibility and low toxicity. The combination of MOFs and Fe3O4 has shown its potential applications in drug delivery, catalysis and wastewater treatment. However, only classical porous MOFs are used to encapsulate magnetic nanoparticles, such as MIL-100(Fe), ZIF-8, UiO-66 and so on. Herein, we firstly synthesized a new MOF ZTB-1 and surveyed its applications in magnetic materials. As a result, a highly water-stable MOF-based magnetic material Fe3O4@ZTB-1 has been obtained, and it was for the first time used as an excellent adsorbent for the fast adsorption of Congo red (CR) from aqueous solutions, exhibiting an adsorption capacity of 458 mg CR per gram. The electrostatic interactions and hydrogen bond are responsible for binding of CR with Fe3O4@ZTB-1. The magnetic material Fe3O4@ZTB-1 shows a potential application in dyeing wastewater treatment.
金属-有机骨架（MOFs）是一类令人兴奋的多孔结晶材料，在可持续能源和环境修复方面引起了极大的兴趣。磁铁矿（Fe3O4）是最著名的磁性材料之一，其涉及高饱和磁化强度、生物相容性和低毒性的特性已被广泛研究。MOFs 和 Fe3O4 的结合在药物输送、催化和废水处理方面显示出了其潜在的应用。然而，只有经典的多孔 MOFs 被用于封装磁性纳米粒子，例如 MIL-100(Fe)、ZIF-8、UiO-66 等。在此，我们首次合成了一种新的 MOF ZTB-1，并研究了其在磁性材料中的应用。结果，得到了一种高水稳定性的基于 MOF 的磁性材料 Fe3O4@ZTB-1，它首次被用作从水溶液中快速吸附刚果红（CR）的优良吸附剂，其吸附容量为每克 458 毫克 CR。静电相互作用和氢键是 CR 与 Fe3O4@ZTB-1 结合的原因。磁性材料 Fe3O4@ZTB-1 在处理印染废水方面显示出了潜在的应用。
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