Using an easy mechanical agitation process at room temperature, a metal–organic framework (MOF) based on metallic Zn(ii), organic linker benzene-1,3,5-tricarboxylic acid (Zn-BTC), Fe3O4 nanoparticles, and nanocellulose are combined to create a novel composite material called Fe3O4/NC/MOF. Various tools were used to characterize the created composite. Congo red, Basic Blue 54 (BB 54), Basic Violet 14 (BV 14), and Acid red 88 (AR 88) dyes were effectively eliminated from water using Fe3O4/NC/MOF. A number of variables were investigated, including pH, temperature, contact time, initial dye concentration, and adsorbent dosage. To understand the specific adsorption process, a number of kinetic models were used, including the intra-particle diffusion model, Elovich’s kinetic model, pseudo-first-order, and pseudo-second-order kinetic models. The most accurate description of dye sorption kinetics comes from the pseudo-second-order kinetic model. Also, the Langmuir model is more accurate to describe isotherms than Freundlich and Temkin models. Furthermore, thermodynamic parameters were obtained and examined, including enthalpy (ΔH), Gibbs free energy (ΔG), and entropy (ΔS). After four cycles, the Fe3O4/NC/MOF demonstrated good recyclability. According to experimental research, this adsorbent is promising to enhance the quality of environmental water that has been tainted with organic dyes.

中文翻译：

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新型三元磁性复合材料的合成和表征，用于增强去除有机染料的吸附能力

在室温下使用简单的机械搅拌过程，基于金属Zn（二、)、有机连接体苯-1,3,5-三羧酸 (Zn-BTC)、Fe3氧4纳米颗粒和纳米纤维素相结合，创造出一种名为 Fe 的新型复合材料3氧4/NC/MOF。使用各种工具来表征所创建的复合材料。使用 Fe 可有效去除水中的刚果红、碱性蓝 54 (BB 54)、碱性紫 14 (BV 14) 和酸性红 88 (AR 88) 染料3氧4/NC/MOF。研究了许多变量，包括 pH、温度、接触时间、初始染料浓度和吸附剂剂量。为了理解特定的吸附过程，使用了许多动力学模型，包括颗粒内扩散模型、Elovich 动力学模型、伪一级和伪二级动力学模型。染料吸附动力学最准确的描述来自准二级动力学模型。此外，Langmuir 模型比 Freundlich 和 Temkin 模型更准确地描述等温线。此外，还获得并检查了热力学参数，包括焓（ΔH), 吉布斯自由能 (ΔG) 和熵 (ΔS）。经过四个循环后，Fe3氧4/NC/MOF表现出良好的可回收性。根据实验研究，这种吸附剂有望提高被有机染料污染的环境水的质量。