Metal-organic frameworks (MOFs) have been fascinating catalysts for decolorization of azo pigments. A novel and easy approach to the preparation of a magnetic Zn₂(BDC)₂(DABCO) MOF has been reported as Fenton-like heterogeneous nano-catalyst for the degradation of azo dyes from aqueous samples. The samples were characterized by Fourier transform infrared spectroscopy (FTIR) for the evaluation of functional groups, X-ray diffraction (XRD) analysis for the investigation of crystal structure, nitrogen adsorption-desorption for the measurement of surface area, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) for the determination of size and morphology, energy-dispersive X-ray spectroscopy (EDX) to evaluate the chemical composition, and zeta potential for the investigation of surface charge. In this work, the MOF-chitosan-Fe₃O₄ nanocomposite (NC) was reported for azo dye degradation. To obtain high degradation efficiency, the effects of different parameters including nano-catalyst dose, temperature, contact time and oxidant volume on the decolorization efficiency were measured using experimental design approaches. Under optimized conditions, the degradation efficiency of methyl orange (MO) using MOF-chitosan-Fe₃O₄ nano-catalyst was obtained to be >99%. The results showed that the magnetic MOF could be used as a promising recyclable magnetic nano-catalyst for colored wastewater treatment.

金属有机框架 (MOF) 一直是偶氮颜料脱色的迷人催化剂。一种制备磁性 Zn ₂ (BDC) _{2 的}新颖且简便的方法(DABCO) MOF 已被报道为类似芬顿的多相纳米催化剂，用于从水性样品中降解偶氮染料。样品通过傅里叶变换红外光谱 (FTIR) 表征官能团，X 射线衍射 (XRD) 分析用于研究晶体结构，氮吸附-解吸用于测量表面积，场发射扫描电子显微镜(FESEM)、透射电子显微镜 (TEM) 用于确定尺寸和形态，能量色散 X 射线光谱 (EDX) 用于评估化学成分，以及 zeta 电位用于研究表面电荷。在这项工作中，MOF-壳聚糖-Fe ₃ O ₄据报道，纳米复合材料 (NC) 可降解偶氮染料。为了获得高降解效率，使用实验设计方法测量了包括纳米催化剂剂量、温度、接触时间和氧化剂体积在内的不同参数对脱色效率的影响。在优化条件下，MOF-壳聚糖-Fe ₃ O ₄纳米催化剂降解甲基橙(MO)的效率>99%。结果表明，磁性 MOF 可作为一种有前景的可回收磁性纳米催化剂用于有色废水处理。