用于去除全氟辛烷磺酸和重铬酸盐的新型分层离子聚合物

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2024-11-20 DOI:10.1016/j.cej.2024.157838

Ke Kong, Jun Liang, Fangling Cui, Ying Zhang, Daqiang Yuan, Ruihu Wang

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引用次数: 0

摘要

开发可同时去除全氟辛烷磺酸（PFOS）和重铬酸盐污染物的多孔吸附剂是废水修复领域的关键和挑战。在此，我们提出了一种基于离子聚合物（ImIP-6）的树叶启发式人工清洁系统，该聚合物具有高密度的咪唑分子和电荷平衡的氯化物，可同时高效去除全氟辛烷磺酸和重铬酸盐。ImIP-6 具有快速的动力学特性和超强的吸附能力，对全氟辛烷磺酸和六价铬的最大吸附值分别为 2606 毫克/克和 247 毫克/克，远远优于许多多孔吸附剂。机理研究证明，ImIP-6 具有两种类型的全氟辛烷磺酸和重铬酸盐吸附域，其中咪唑类阳离子表面可诱导全氟辛烷磺酸富集，并随后在外层表面形成胶束，而不会明显干扰内部孔隙对重铬酸盐的吸附。这项工作为废水修复提供了一种基于具有分层吸附域的仿生物系统的新方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Novel hierarchical ionic polymers for removal of perfluorooctane sulfonate and dichromate

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Novel hierarchical ionic polymers for removal of perfluorooctane sulfonate and dichromate

The development of porous adsorbents for removal of concomitant perfluorooctane sulfonate (PFOS) and dichromate pollutants is pivotal and challenging in wastewater remediation. Herein, we presented a leaf-inspired artificial cleaning system based on an ionic polymer (ImIP-6) with high local density of imidazolium moieties and charge-balanced chloride for efficiently simultaneous removal of PFOS and dichromate. ImIP-6 exhibits fast kinetics and ultrahigh uptake capacities with maximum adsorption values of 2606 mg g⁻¹ for PFOS and 247 mg g⁻¹ for Cr(VI), which are far superior to many porous sorbents. The mechanism studies have evidenced that ImIP-6 possesses two types of domains for PFOS and dichromate adsorption, in which the imidazolium-based cationic surface induces PFOS enrichment and subsequent formation of micelles on the outer surfaces without significantly interfering the adsorption of dichromate in the interior pores. This work provides one new approach based on biomimetic systems with hierarchical adsorption domains for wastewater remediation.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.