新型富氮β-环糊精微孔聚合物的全氟/多氟烷酸广谱吸附应用及其机理研究

吸附法在全氟/多氟烷酸（PFAAs）水污染处理领域有广阔的应用前景，但目前吸附剂仍然不同程度存在吸附容量低、对PFAAs新兴替代品亲和性差、抗背景污染物干扰能力低等不足，无法有效实现真实水环境中PFAAs的广谱吸附。本项目拟合成一类具有高可及性β-环糊精空腔和三嗪基微孔的富氮β-环糊精微孔聚合物（N-CDMPs），调控胺化β-环糊精和三嗪基微孔结构的空间均匀分布性，探究构建单体对N-CDMPs理化性质的影响；研究N-CDMPs的PFAAs吸附性能及抗背景污染物干扰性，阐明其作用机制和构效关系；建立PFAAs动态吸附方法，将N-CDMPs应用于真实水环境中PFAAs广谱吸附。本项目研究有望助力解决真实水环境中PFAAs广谱吸附这一难题，有利于评估新型β-环糊精聚合物（CDPs）对PFAAs的吸附行为和富集潜力，也有利于拓展新型CDPs在环境污染物控制领域的应用，具有重要的理论价值和实际意义。

Adsorption methods have broad application prospects in the field of per- and polyfluoroalkyl acids (PFAAs) contained water pollution treatment. Nowadays, the adsorbents still suffer from obstacles, such as low adsorption capacity, poor affinity for new alternatives of PFAAs, and low anti-interference ability for background pollutants, which cannot effectively realized the broad spectrum adsorption of PFAAs in real water environment. In this project, a series of nitrogen-rich β-cyclodextrin microporous polymers (N-CDMPs) with high accessible β-cyclodextrin cavity and triazine-based micropores will be constructed. The spatial distribution of aminated β-CD and triazine-based micropore will be regulated well, and the influence on the physical and chemical properties of N-CDMPs by building blocks will also be explored. The adsorption property for PFAAs and the anti-interference ability for background pollutants will be studied, and the corresponding mechanism will be clarified. The dynamic adsorption method with N-CDMPs will be established, which will be applied to the wide-spectrum adsorption of PFAAs in real water environment. This project is expected to solve the problem of wide-spectrum adsorption of PFAAs in real water environment, and is beneficial for the evaluation of the adsorption behavior and enrichment potential of new β-cyclodextrin polymers (CDPs) for PFAAs. This project will also expand the application of newly developed CDPs in the field of environmental pollutant treatment, which has important theoretical value and practical significance.