The iron metal-organic framework composite with chitosan (CS/MOF-235) was synthesized using a solvothermal method and its synthesis was confirmed by surface area, PZC, XRD, FESEM, XPS, TGA, TEM, EDX mapping and EDX analysis. The chitosan composite of the iron metal-organic framework (CS/MOF-235), MOF-235 and chitosan were used for the removal of methylene blue (MB) and methyl orange (MO) from aqueous solutions. The maximum adsorption capacities were found to be 2857 - 2326 mg/g for CS/MOF-235, 357 – 236 mg/g for MOF-235 and 209-171 mg/g for chitosan (CS) which reveal that the adsorption capacity of CS/MOF-235 is almost 8 and 14 times greater than MOF-235 and chitosan respectively. The adsorption selectivity of the (CS/MOF-235) towards the dye was in the order MO > MB. Moreover, hydrogen bonding, pi-pi bonding, pore-filling, electrostatic interactions and chemisorption were proposed as possible mechanisms for the removal of dyes onto CS/MOF-235.

The intraparticle diffusion and Richenberg models confirmed that the adsorption process was jointly controlled by the pore and film diffusion. The negative values of the isosteric heat of adsorption (Δ$\overline{\mathrm{H}}$) fall with surface coverage indicating that a lesser amount of heat is required for the greater uptake of dyes.

采用溶剂热法合成了具有壳聚糖的铁金属-有机骨架复合材料(CS/MOF-235)，并通过比表面积、PZC、XRD、FESEM、XPS、TGA、TEM、EDX映射和EDX分析证实了其合成。铁金属-有机骨架 (CS/MOF-235)、MOF-235 和壳聚糖的壳聚糖复合材料用于去除水溶液中的亚甲蓝 (MB) 和甲基橙 (MO)。 CS/MOF-235的最大吸附容量为 2857 - 2326 mg/  g，MOF-235 和 209-171 的最大吸附容量为 357 - 236 mg/g mg/g 壳聚糖 (CS) 表明 CS/MOF-235 的吸附能力分别是 MOF-235 和壳聚糖的 8 倍和 14 倍。(CS/MOF-235) 对染料的吸附选择性顺序为 MO > MB。此外，氢键、pi-pi 键、孔填充、静电相互作用和化学吸附被认为是染料在 CS/MOF-235 上去除的可能机制。

颗粒内扩散和 Richenberg 模型证实吸附过程由孔和膜扩散共同控制。等量吸附热的负值（Δ$\overline{\mathrm{H}}$) 随表面覆盖率下降，这表明需要较少量的热量来吸收更多的染料。