Metal–organic framework ([Cd₂(oba)₂(4‐bpdb)₂] _n·3.5(DMF)) (TMU‐8) was successfully synthesized via mechanosynthesis by using nonlinear dicarboxylate and linear N‐donor. The TMU‐8 exhibited accessible cages and tunnels, specific adsorption making it excellent adsorbent for dye removal. The obtained TMU‐8 exhibited accessible cages and tunnels, specific adsorption making them excellent adsorbent for dye removal. The adsorption isotherms, kinetics, thermodynamics, and spectroscopic analyses of the removal of the reactive black 5 onto TMU‐8 were studied. Several variables affecting the removal of the reactive black 5, such as sample pH, amount of sorbent, contact time, and salt concentration, were investigated and optimized. The thermodynamic parameters and kinetics characteristics were also analyzed. The thermodynamic parameters and kinetics characteristics were analyzed. The experimental isotherms data were fitted into Freundlich, Temkin, and Langmuir isotherm equations, and the results indicated that the Langmuir isotherm described the data appropriable than others for reactive black 5 adsorptions. The q_max (mg g⁻¹) was calculated from the Langmuir as 79.36 mg g⁻¹. The fitness of equilibrium data to kinetic models such as, pseudo‐first‐order and pseudo‐second‐order were studied. The adsorption followed pseudo‐second‐order kinetics. Thermodynamic parameters like the enthalpy, entropy, and Gibbs free energy were determined by the Gibbs free energy function, confirming that the adsorption process was spontaneous, exothermic, and feasible.

中文翻译：

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镉基金属有机框架，用于从水溶液中去除染料

金属有机框架（[Cd ₂（oba）₂（4-bpdb）₂ ] _n ·使用非线性二羧酸盐和线性N供体通过机械合成成功合成了3.5（DMF））（TMU-8）。TMU-8展示了易于接近的笼子和通道，特殊的吸附使其成为去除染料的出色吸附剂。所获得的TMU-8展示了易于接近的笼子和隧道，特殊的吸附使其成为去除染料的极佳吸附剂。研究了吸附等温线，动力学，热力学和光谱分析，分析了将活性黑5去除到TMU-8上的情况。研究和优化了影响活性黑5去除的几个变量，例如样品pH，吸附剂量，接触时间和盐浓度。还分析了热力学参数和动力学特性。分析了热力学参数和动力学特性。将实验等温线数据拟合到Freundlich，Temkin和Langmuir等温线方程中，结果表明Langmuir等温线描述了比其他适用于活性黑5吸附的数据。的从Langmuir计算出q _max（mg g ^-1）为79.36 mg g ^-1。研究了平衡数据对动力学模型（例如伪一阶和伪二阶）的适应性。吸附遵循伪二级动力学。焓，熵和吉布斯自由能等热力学参数由吉布斯自由能函数确定，证实了吸附过程是自发的，放热的和可行的。