Technologies that can efficiently purify nontraditional water sources are needed to meet rising global demand for clean water. Water treatment plants typically require a series of costly separation units to achieve desalination and the removal of toxic trace contaminants such as heavy metals and boron. We report a series of robust, selective, and tunable adsorptive membranes that feature porous aromatic framework nanoparticles embedded within ion exchange polymers and demonstrate their use in an efficient, one-step separation strategy termed ion-capture electrodialysis. This process uses electrodialysis configurations with adsorptive membranes to simultaneously desalinate complex water sources and capture diverse target solutes with negligible capture of competing ions. Our methods are applicable to the development of efficient and selective multifunctional separations that use adsorptive membranes.

需要能够有效净化非传统水源的技术来满足不断增长的全球对清洁水的需求。水处理厂通常需要一系列昂贵的分离装置来实现脱盐和去除有毒痕量污染物（例如重金属和硼）的功能。我们报告了一系列功能强大，选择性和可调吸附膜，其特征是嵌入离子交换聚合物中的多孔芳香族骨架纳米粒子，并展示了它们在称为离子捕获电渗析的高效，一步分离策略中的使用。此过程使用具有吸附膜的电渗析配置，同时淡化复杂的水源并捕获竞争离子可忽略不计的各种目标溶质。