Lu Meihan, Sun Lijun, Yang Dongxin, Nie Zewen, Gong Weitao
School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
Molecules. 2025 Feb 28;30(5):1123. doi: 10.3390/molecules30051123.
Water pollution is a critical environmental issue in modern society, and adsorption is recognized as a straightforward and efficient water purification technique. In this study, three new viologen-based ionic porous organic polymers were designed and successfully synthesized via a simple approach, and their adsorption properties for water pollutants were evaluated. The cationic nature of these polymers, coupled with their large conjugated π-electron system, physicochemical stability, and aromatic backbone, contributes to their high adsorption capacity and rapid adsorption efficiency for anionic contaminants in water such as Methyl Orange, Congo Red, and Cr (VI). The polymers exhibited maximum adsorption capacities of 1617 mg/g for MO, 3734 mg/g for CR, and 530.22 mg/g for Cr (VI), surpassing most previously reported adsorbents. Furthermore, the polymers maintained a high removal rate even in the presence of competing anions. Effective separation of anionic dyes from mixed solutions could be achieved through simple filtration. These characteristics make them promising candidates for water purification applications.
水污染是现代社会中一个关键的环境问题，吸附被认为是一种简单有效的水净化技术。在本研究中，通过一种简单的方法设计并成功合成了三种新型基于紫精的离子型多孔有机聚合物，并评估了它们对水污染物的吸附性能。这些聚合物的阳离子性质，加上其大的共轭π电子体系、物理化学稳定性和芳香主链，使其对水中的阴离子污染物如甲基橙、刚果红和Cr(VI)具有高吸附容量和快速吸附效率。这些聚合物对MO的最大吸附容量为1617 mg/g，对CR为3734 mg/g，对Cr(VI)为530.22 mg/g，超过了大多数先前报道的吸附剂。此外，即使在存在竞争性阴离子的情况下，这些聚合物仍保持高去除率。通过简单过滤可以实现从混合溶液中有效分离阴离子染料。这些特性使其成为水净化应用的有前途的候选材料。
