MOFs are usually used as efficient adsorbents to remove specific pollutants in water. However, because of their poor water stability relatively small particle size, their application in adsorbing and removing pollutants from water is limited. In this paper, with nitrile rubber sponge as the substrate, UiO-66-NH₂/sponge composites were firstly in-situ synthesized and systematically evaluated UiO-66-NH₂ as an adsorbent to remove 2,4-dichlorophenoxyacetic acid from water. This composite could not only remain the adsorption capacity for 2,4-dichlorophenoxyacetic acid of UiO-66-NH₂, but also was much more convenient for separation after the adsorption compared to UiO-66-NH₂. In addition, the mechanism of the adsorption of UiO-66-NH₂ for 2,4-dichlorophenoxyacetic acid were discussed in detail. Electrostatic interaction between UiO-66-NH₂ and 2,4-dichlorophenoxyacetic acid was the main adsorption mechanism. The adsorption was mainly suitable for Langmuir isotherm models, and its maximum adsorption capacity of 2,4-dichlorophenoxyacetic acid was 72.99 mg g⁻¹.

MOF通常用作有效的吸附剂，以去除水中的特定污染物。然而，由于它们较差的水稳定性，相对较小的粒径，限制了它们在从水中吸附和去除污染物的应用。本文以丁腈橡胶海绵为基材，首先原位合成了UiO-66-NH ₂ /海绵复合材料，并系统评价了UiO-66-NH ₂作为吸附剂从水中去除2,4-二氯苯氧基乙酸的能力。该复合物不仅可以保持对UiO-66-NH _2的2，4-二氯苯氧基乙酸的吸附能力，而且与UiO-66-NH ₂相比，吸附后的分离更加方便。此外，UiO-66-NH的吸附机理₂为2,4-二氯苯氧乙酸进行了详细讨论。UiO-66-NH ₂与2,4-二氯苯氧基乙酸之间的静电相互作用是主要的吸附机理。吸附主要适用于Langmuir等温模型，其最大吸附能力为2,4-二氯苯氧基乙酸为72.99 mg g ^-1。