Effective adsorption of Congo red by a MOF-based magnetic material
Effective adsorption of Congo red by a MOF-based magnetic material
复制标题
MOF基磁性材料有效吸附刚果红
DOI：
10.1039/c9dt00813f
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发表时间：
2019-04-14
影响因子：
4
通讯作者：
Zheng, He-Gen
中科院分区：
文献类型：
--
作者：
Han, Li-Juan;Ge, Fa-Yuan;Zheng, He-Gen
金属有机骨架(MOF)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人们的极大兴趣。磁铁矿(Fe3O4)是最著名的磁性材料之一，具有高饱和磁化强度、生物相容性和低毒等特性，已被广泛研究。MOFS与Fe3O4的结合显示了其在药物输送、催化和废水处理等方面的潜在应用。然而，只有经典的多孔MOF被用来包裹磁性纳米粒子，如MIL-100(Fe)、ZIF-8、UIO-66等。本论文首先合成了一种新型MOF分子筛ZTB-1，并对其在磁性材料中的应用进行了综述。合成了一种高水稳定性的MOF基磁性材料Fe3O4@ZTB-1，并首次将其用作快速吸附水中刚果红(CR)的优良吸附剂，其吸附容量为458 mg/g。静电相互作用和氢键是CR与Fe3O4@ZTB-1结合的主要原因。磁性材料Fe3O4@ZTB-1在印染废水处理中具有潜在的应用前景。
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.