Abstract

The performance of water purification by adsorption method has been limited owing to the fact that most of current available adsorbents fail to achieve satisfactory removal performance for organic micropollutants. Herein, we report the design and synthesis of novel porous polymeric adsorbent built from β-cyclodextrin (β-CD), in which β-CD molecules are arranged in an ordered bis (β-CD) tubular assemblies. The induction of bis (β-CD) units renders them high adsorption affinity toward bisphenols (bisphenol A and its analogues bisphenol B, bisphenol F and bisphenol S), the typical endocrine disruptors, via the formation of stable host-guest inclusion complexes in aquatic systems. In combination with their high porosity (Brunauer-Emmett-Teller (BET) surface area of 150 m²·g⁻¹), abundant β-CD content and fast sorption kinetics, the obtained adsorbent outperforms commercial water purifier in elimination of bisphenol micropollutants from potable water. Our work may open a new avenue for designing highly efficient adsorbents for removal of organic micropollutants from aquatic systems.

中文翻译：

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多孔的β-环糊精纳米管组件可从水生系统中高效去除双酚微污染物

摘要

由于大多数当前可用的吸附剂无法获得令人满意的有机微污染物去除性能，因此通过吸附方法净化水的性能受到了限制。本文中，我们报道了由β-环糊精（β-CD）构建的新型多孔聚合物吸附剂的设计和合成，其中β-CD分子排列在有序的双（β-CD）管状组件中。双（β-CD）单元的诱导通过在水中形成稳定的宿主-客体包涵体复合物，使其对典型的内分泌干扰物双酚（双酚A及其类似物双酚B，双酚F和双酚S）具有很高的吸附亲和力。系统。结合其高孔隙度（布鲁诺·埃默特·泰勒（BET）表面积150 m ² ·g ^-1），丰富的β-CD含量和快速的吸附动力学，所获得的吸附剂在从饮用水中去除双酚微污染物方面优于商用净水器。我们的工作可能会为设计高效吸附剂以从水生系统中去除有机微量污染物开辟一条新途径。