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通过双功能分子材料有效识别和去除持久性有机污染物

Zhonghang Chen¹, Yi-Lin Lu¹, Liang Wang²

¹Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Frontiers Science Center for New Organic Matter and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin 300071, China.

Journal of the American Chemical Society

|December 20, 2022

概括

一种新型的分子纳米能有效地检测并从水中去除持久性有机污染物 (POP),特别是氧硫酸盐 (PFOS). 这种突破性的材料提供了快速传感和高吸收能力,

科学领域:

环境化学
材料科学
分析化学

背景情况:

持久性有机污染物 (POP) 严重污染环境,由于生物积累,对人类健康构成重大风险.
由于与传统捕获材料的相互作用较弱,有效检测和清除POPs具有挑战性.
perfluorooctane sulfonate (PFOS) 是一种具有明显的水友和疏水性结构的代表性 POP.

研究的目的:

研究分子纳米 (1) 作为一种高性能传感和吸收物质.
证明纳米1在检测和从水溶液中去除 perfluorooctane sulfonate (PFOS) 的效率.
在分子层面阐明宿主-客的相互作用,以设计先进的POP整治材料.

主要方法:

使用用于宿主-客人相互作用的分子纳米 (1).
采用氧硫酸盐 (PFOS) 作为一种模拟POP基质.
使用固态NMR光谱和单晶X射线衍射来表征宿主-客的相互作用.

主要成果:

在10秒内实现了高度敏感的光检测.
在20分钟内从水中清除97%的PFOS.
观察到纳米1的结合常数比现有吸附剂高两倍.

结论:

分子纳米 (1) 是用于敏感识别和有效清除PFOS的基准材料.
强大的宿主-客人相互作用是纳米1卓越性能的关键.
获得的分子层面的洞察力将指导下一代传感和吸收材料的设计.

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