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锌离子印迹聚合物的吸附性能研究与合成

Synthesis and Study of Sorption Properties of Zinc-Imprinted Polymer.

作者信息

Zhakina Alma Khassenovna, Vassilets Yevgeniy Petrovich, Arnt Oxana Vasilievna, Zhakin Almat Maulenuly

机构信息

Limited Liability Partnership «Institute of Organic Synthesis and Coal Chemistry of the Republic of Kazakhstan», Karaganda 100008, Kazakhstan.

出版信息

Polymers (Basel). 2024 Dec 19;16(24):3545. doi: 10.3390/polym16243545.

DOI:10.3390/polym16243545
PMID:39771397
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11677785/
Abstract

Zinc-imprinted polymer (ZnIP) and non-imprinted polymer (NIP) were synthesized by radical polymerization, and their properties were studied. The novelty of the work lies in the use of humic acids isolated from coals of the Shubarkol deposit (Karaganda, Kazakhstan) as a basis for the imprinted polymer matrix, with methacrylic acid and ethylene glycol dimethacrylate as a functional monomer and a cross-linking agent, respectively. The composition and structure of ZnIP and NIP were characterized using various physicochemical methods. The specific surface area of ZnIP determined by the BET method was 40.60 ± 0.4 m/g, which is almost twice as high as the similar indicator for NIP (21.50 ± 0.3 m/g). In sorption tests of solutions with bimetallic ions, ZnIP demonstrates higher adsorption: 96.15% for Zn and 74.88% for Pb, while NIP adsorbs only 81.33% and 60.11%, respectively. Sorption on both polymers is described by a pseudo-first-order equation (r > 0.99). The distribution coefficients for ZnIP are higher than for NIP. ZnIP has a relative selectivity that exceeds NIP by 2.90 times. The research results indicate the promise of using ZnIP for the selective removal of zinc ions from solutions of multicomponent systems, including wastewater, making it a valuable material for solving environmental and technological problems.

摘要

通过自由基聚合合成了锌离子印迹聚合物（ZnIP）和非印迹聚合物（NIP），并对其性能进行了研究。这项工作的新颖之处在于，以从舒巴尔科尔矿床（哈萨克斯坦卡拉干达）的煤中分离出的腐殖酸为基础制备印迹聚合物基质，分别以甲基丙烯酸和乙二醇二甲基丙烯酸酯作为功能单体和交联剂。采用多种物理化学方法对ZnIP和NIP的组成和结构进行了表征。用BET法测定的ZnIP的比表面积为40.60±0.4 m/g，几乎是NIP类似指标（21.50±0.3 m/g）的两倍。在双金属离子溶液的吸附试验中，ZnIP表现出更高的吸附率：锌为96.15%，铅为74.88%，而NIP分别仅吸附81.33%和60.11%。两种聚合物上的吸附均可用拟一级方程描述（r>0.99）。ZnIP的分配系数高于NIP。ZnIP的相对选择性比NIP高2.90倍。研究结果表明，使用ZnIP从多组分体系溶液（包括废水）中选择性去除锌离子具有前景，使其成为解决环境和技术问题的有价值材料。

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