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Efficient removal of various coexisting organic pollutants in water based on β-cyclodextrin polymer modified flower-like Fe3O4 particles

污染物 吸附 化学 聚合物 化学工程 环糊精 环境化学 废水 可重用性 有机化学 环境工程 环境科学 计算机科学 工程类 程序设计语言 软件
作者
Dafan Chen,Yun Shen,Shuang-Jia Wang,Xiuping Chen,Xiaorong Cao,Zhining Wang,Yiming Li
出处
期刊:Journal of Colloid and Interface Science [Elsevier]
卷期号:589: 217-228 被引量:51
标识
DOI:10.1016/j.jcis.2020.12.109
摘要

The construction of porous β-cyclodextrin polymer (β-CDP) modified flower-like Fe3O4 particles ([email protected]3O4) is expected to remove various organic pollutants from water, based on the larger specific surface area of flower-like Fe3O4 particles and the active sites provided by β-CDP. With the help of various noncovalent interactions, the removal ability of [email protected]3O4 for various water-soluble and water-insoluble organic pollutants were systematically studied. [email protected]3O4 were successfully synthesized and applied for the simultaneous removal of various organic pollutants with different electrical properties, structure and hydrophobicity. Adsorption efficiency, adsorption process, adsorption mechanism and the reusability of [email protected]3O4 for single pollutant and mixed pollutants were comprehensively investigated. [email protected]3O4 exhibited excellent adsorption capabilities for various pollutants. Importantly, when these pollutants were coexisting, [email protected]3O4 still maintained a comparable removal ability for various pollutants. Efficient removal of organic pollutants was attributed to varieties of noncovalent interactions between organic pollutants and [email protected]3O4, including hydrophobic interactions, hydrogen bonds, π-π and electrostatic interactions. These results revealed that the excellent adsorption ability and convenient regeneration make [email protected]3O4 being a potential candidate in various complex organic wastewater purification.
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