环境工程学报2026，Vol.20Issue(4)：1143-1154,12.DOI:10.12030/j.cjee.202510089
Fe3O4@MIL-100(Fe)对水中微塑料的去除机理
Removal mechanism of microplastics from water by Fe3O4@MIL-100(Fe)
摘要
Abstract
Microplastics(MPs)have become a pervasive pollutant in aquatic environments,raising growing concern over their ecological risks.Developing low-cost and efficient removal technologies is therefore an important research focus.In this study,Fe3O4@MIL-100(Fe)magnetic microspheres were prepared via one-pot hydrothermal method and applied for the adsorption of polystyrene(PS)and polylactic acid(PLA)microplastics from water.The results showed that Fe3O4@MIL-100(Fe)had a clear core-shell structure with a high specific surface area of 848.6 m2·g-1.Adsorption kinetics revealed that PLA uptake followed pseudo-second-order kinetics,while PS adsorption conformed to both pseudo-first-order and pseudo-second-order models.The adsorption equilibrium data for both PLA and PS were well described by the Freundlich model.The removal rates of PLA and PS increased with decreasing pH(from 58.18％and 49.66％to 98.90％and 98.58％,respectively)and with increasing ionic strength(from 64.24％and 21.58％to 97.05％and 94.63％,respectively).The removal mechanism involved a combination of physical and chemical processes.For PLA,hydrogen bonding predominated,accompanied by some complexation.For PS,adsorption was primarily driven by π-π stacking and hydrogen bonding.This findings demonstrate the strong potential of Fe3O4@MIL-100(Fe)as an efficient adsorbent for microplastic removal and provide a promising strategy for controlling emerging pollutants in water.关键词
Fe3O4@MIL-100(Fe)/微塑料/去除机理/环境因子Key words
Fe3O4@MIL-100(Fe)/microplastic/removal mechanism/environmental factors分类
资源环境引用本文复制引用
滕雪妍,杨悦锁,杨赵飞,杨文玥,宋晓明..Fe3O4@MIL-100(Fe)对水中微塑料的去除机理[J].环境工程学报,2026,20(4):1143-1154,12.基金项目
国家自然科学基金资助项目(42172284) （42172284）
