Designing and preparing of materials for high highly efficiency and reversible iodine adsorption remains a challenging task. In this study, a series of benzonquanmine-based hypercrosslinked polymers (BHCPs) with nitrogen-rich were designed and synthesized via Friedel-Crafts reaction. The obtained BHCPs showed the high specific surface and high thermal stability. Moreover, the BHCP-3 of BHCPs exhibits excellent iodine capture performance, including ultrahigh iodine vapor adsorption capacity of 619 wt%, the breakthrough iodine experiment of the adsorption capacity reached 2.29 g/g, which is the highest published capacity of HCP adsorbent. And the removal rate of iodine in aqueous solution also reached 92.5 %, and reached 87.4 % the first 10 min, demonstrating rapid adsorption effects. Additionally, the iodine adsorption process of BHCPs conformed to the pseudo-second-order kinetic models, and which were a multi-layer adsorption on non-homogeneous surfaces. Furthermore, the three adsorbents maintained more than 85 % of their iodine capture capacity after five cycles, demonstrating their good recyclability and potential for practical applications.

中文翻译：

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基于 Benzonquanmine 的超交联聚合物，用于高效和可逆的碘捕获


设计和制备用于高效和可逆碘吸附的材料仍然是一项具有挑战性的任务。在本研究中，设计了一系列基于苯并全胺的富氮超交联聚合物 （BHCPs），并通过 Friedel-Crafts 反应合成。所得的 BHCP 表现出高比表面积和高热稳定性。此外，BHCPs 的 BHCP-3 表现出优异的碘捕获性能，包括超高的碘蒸气吸附容量为 619 wt%，吸附容量的突破性碘实验达到 2.29 g/g，这是已发表的 HCP 吸附剂的最高容量。水溶液中碘的去除率也达到 92.5 %，前 10 min 达到 87.4 %，表现出快速吸附效果。此外，BHCPs 的碘吸附过程符合准二级动力学模型，在非均匀表面上进行多层吸附。此外，三种吸附剂在 5 次循环后仍保持了 85% 以上的碘捕获能力，证明了它们良好的可回收性和实际应用潜力。