Removal of volatile radioiodine from air and wastewater streams using porous materials is imperative to curb its long-term adverse effects on the environment. Herein, we report the development of a hydrogel system (PEIG) using polyethylenimine and glutaraldehyde followed by production of xerogel (PEIXG). PEIXG effectively captured iodine in its vapor form with an excellent adsorption capacity of 2.9 g/g. Additionally, PEIXG efficaciously removed dissolved iodine from water and nonpolar solvent. Moreover, the reversible nature of the uptake enabled good recyclability and utilization of I₂–PEIXG as a catalyst for the synthesis of an important class of functional heterocycle, 2-aminobenzothiazoles.

中文翻译：

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sp2 / sp3-N-rich聚合网络的高吸附能力：从分子碘捕获到催化

必须使用多孔材料去除空气和废水中的挥发性放射性碘，以抑制其对环境的长期不利影响。在本文中，我们报道了使用聚乙烯亚胺和戊二醛开发水凝胶系统（PEIG），然后生产干凝胶（PEIXG）。PEIXG以2.9 g / g的出色吸附能力有效地捕获了蒸气形式的碘。另外，PEIXG有效地从水和非极性溶剂中去除了溶解的碘。此外，吸收的可逆性使它具有良好的可回收性，并利用I ₂ -PEIXG作为催化剂来合成重要的功能性杂环，即2-氨基苯并噻唑。