This work reports for the first time the use of MOF-808 for the adsorption of glyphosate from a diluted herbicide formulation (Roundup®). MOF-808 was synthesized in organic solvent (MOF-808(DMF)) or in water (MOF-808(H₂O)) to compare the influence of textural characteristics on the adsorption process. In addition, the adsorption performances of these materials were compared to those of the UiO-66 and UiO-66(NH₂) series materials, which have the same SBU, allowing us to evaluate the influence of the topicity and functionalization of the ligand on the adsorption capacity of glyphosate. MOF-808 showed the highest adsorption capacity, reaching a q_max equal to 277.01 mg g⁻¹, and good kinetic performance, removing 70.3% of the glyphosate from solution in 10 min and 99.5% after 3 h of contact. MOFs UiO-66 and UiO-66(NH₂) had lower q_max values than MOF-808, possibly due to the blockage of their narrow pores by GLY, which prevents them from accessing Zr sites. The results showed an important relationship between the hydrodynamic diameter and the pore size distribution with access to active sites, consequently influencing the adsorption performance of these porous materials.

这项工作首次报道了使用 MOF-808 从稀释的除草剂配方 (Roundup®) 中吸附草甘膦。在有机溶剂(MOF-808(DMF))或水(MOF-808(H ₂ O))中合成MOF-808，以比较结构特征对吸附过程的影响。此外，将这些材料的吸附性能与具有相同SBU的UiO-66和UiO-66(NH ₂ )系列材料进行了比较，使我们能够评估配体的主题性和功能化对吸附性能的影响。草甘膦的吸附能力。 MOF-808表现出最高的吸附容量，达到_最大含水量277.01 mg g ^-1，并且具有良好的动力学性能，在10分钟内从溶液中去除70.3%的草甘膦，在接触3小时后去除99.5%的草甘膦。 MOF UiO-66 和 UiO-66(NH _{2 ) 的 q最大值}比 MOF-808低，这可能是由于 GLY 堵塞了它们的窄孔，从而阻止了它们进入 Zr 位点。结果表明，流体动力学直径和孔径分布与活性位点的访问之间存在重要关系，从而影响这些多孔材料的吸附性能。