The excessive use of diclofenac sodium (DCF) has led to environmental and food safety problems. Effective removal of DCF in aqueous environment is of great significance. Ionic covalent organic frameworks (iCOFs) are effective adsorbents for the removal of pollutants due to their unique structure and properties, but conventional synthesis of iCOFs is limited by high temperature and long reaction time. Herein, we report a room-temperature strategy to synthesize iCOFs in 24 h for the first time. The room-temperature synthesized ionic COF (RT-iCOF) shows better crystallinity, lager uptake capacity and faster kinetics than those synthesized at high temperature with long reaction time. The adsorption kinetics, isotherms and thermodynamics, the effects of ionic strength, pH, humic acid, and reusability of RT-iCOF for DCF were studied in detail. The prepared RT-iCOF gave the maximum adsorption capacity of 857.5 mg g⁻¹, featuring the highest uptake capacity for DCF so far. The adsorption of DCF on the RT-iCOF are driven by ion exchange, π-π interactions, electrostatic and hydrogen bonds interaction. The adsorption efficiency of RT-iCOF for DCF was still above 90% after 5 regeneration cycles. This work also promotes the facile synthesis and application of iCOFs for the removal of pollutants.

双氯芬酸钠 (DCF) 的过度使用导致了环境和食品安全问题。有效去除水环境中的DCF具有重要意义。离子共价有机框架（iCOFs）由于其独特的结构和性质是去除污染物的有效吸附剂，但iCOFs的常规合成受到高温和长反应时间的限制。在此，我们首次报告了一种在 24 小时内合成 iCOF 的室温策略。室温合成的离子 COF (RT-iCOF) 比在高温下合成的离子 COF (RT-iCOF) 具有更好的结晶度、更大的吸收容量和更快的动力学，反应时间更长。详细研究了 RT-iCOF 对 DCF 的吸附动力学、等温线和热力学、离子强度、pH 值、腐植酸和可重复使用性的影响。⁻¹，具有迄今为止 DCF 的最高吸收能力。DCF 在 RT-iCOF 上的吸附是由离子交换、π-π 相互作用、静电和氢键相互作用驱动的。经过 5 个再生循环后，RT-iCOF 对 DCF 的吸附效率仍高于 90%。这项工作还促进了 iCOFs 在去除污染物方面的简便合成和应用。