应用化学2025，Vol.42Issue(12)：1679-1690,12.DOI:10.19894/j.issn.1000-0518.250082
多孔芳香骨架离子印迹聚合物的制备及对汞的超灵敏检测和高效去除
Preparation of Porous Aromatic Framework-Based Ion-Imprinted Polymers and Their Application for Ultrasensitive Detection and Efficient Removal of Mercury
摘要
Abstract
A novel porous aromatic framework material,designated as LNU-21,was constructed via an ion imprinting strategy to create specific binding geometric cavities for mercury ion recognition.These cavities were directionally anchored onto the framework through Suzuki coupling reactions.The material was comprehensively characterized using Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),scanning electron microscopy(SEM),and Brunauer-Emmett-Teller(BET)surface area analysis.The morphology,adsorption characteristics,and Hg2+detection performance of LNU-21 were thoroughly investigated.Experimental results demonstrate that LNU-21 exhibits dual functionality for simultaneous detection and adsorption of Hg2+ions in aqueous solutions,owing to its tailored recognition cavities,high porosity,and extended π-conjugated system.At a low Hg2+concentration of 4.8×10-5 mol/L,LNU-21 achieved a high fluorescence quenching efficiency of 80%.In the presence of competing ions,the selectivity coefficients for Hg2+ranged from 10.83(Hg2+/Cu2+)to 16.07(Hg2+/Ba2+),indicating exceptional specificity.The adsorption kinetics of Hg2+onto LNU-21 followed a pseudo-second-order model,suggesting chemisorption-dominated behavior.The adsorption isotherm conformed to the Langmuir model,confirming monolayer adsorption with a maximum capacity of 150 mg/g.Moreover,LNU-21 exhibited excellent recyclability,maintaining over 86%removal efficiency after five consecutive adsorption-desorption cycles.This study provides a innovative strategy for designing porous materials capable of synchronous detection and removal of Hg2+ions,offering practical potential for treating mercury-contaminated wastewater.关键词
多孔芳香框架材料/离子印迹/汞离子识别空腔/荧光检测/汞离子去除Key words
Porous aromatic framework materials/Ion imprinting/Mercury ion recognition cavity/Fluorescence detection/Mercury ion removal分类
化学化工引用本文复制引用
苏海迪,李丛,陈士欣,田英,曹祖银,周鸿飞,夏春龙,崔博,邵慧敏,布乃顺..多孔芳香骨架离子印迹聚合物的制备及对汞的超灵敏检测和高效去除[J].应用化学,2025,42(12):1679-1690,12.基金项目
国家自然科学基金(No.31972522)、辽宁省教育厅高校基本科研项目、沈阳市科技局社会治理科技专项、辽宁大学基本科研项目、辽宁大学大学生创新创业训练计划项目和抚顺水务局课题资助 Supported by the National Natural Science Foundation of China(No.31972522),the Basic Scientific Research Project of Liaoning Provincial Department of Education for Universities,the Social Governance Science and Technology Special Project of Shenyang Science and Technology Bureau,the Basic Scientific Research Project of Liaoning University,the Innovation and Entrepreneurship Training Program for College Students of Liaoning University and the Research Project of Fushun Water Affairs Bureau （No.31972522）
