随着工农业和医药等行业的快速发展,大量新污染物在水环境中被检出,其较强的环境持久性和生物毒性给水处理和水生态保护领域带来了重大挑战。纳米零价铁(nZVI)作为一种高效的水体污染物修复剂,常被用于去除水环境中的新污染物。然而,在水中易团聚失活、迁移性差等问题会导致其性能下降。近年来,研究者通过使用载体材料负载nZVI提高其稳定性,降低纳米颗粒的团聚效应,增加活性位点,增强其在水环境修复场景中的应用潜力。梳理了负载型nZVI的合成方法,厘清了不同负载材料的特性,通过综述复合材料对水中新污染物的应用研究现状,展望未来应用前景及可能面临的新问题,以期为负载型nZVI的高效制备及其在新污染物治理领域的广泛应用提供参考。
With rapid advances in the industrial,agricultural,and pharmaceutical sectors,emerging pollutants are increasingly contaminating aquatic environments.Their strong environmental persistence and biotoxicity present substantial pose significant challenges to water treatment and ecological protection.Nano zero-valent iron (nZVI),as an efficient water pollutant remediation agent,is commonly used to remove emerging contaminants from water.However,nZVI's tendency to agglomerate and deactivate in water,coupled with its limited mobility,can lead to performance degradation.In recent years,advancements have focused on enhancing nZVI stability by using carrier materials to mitigate nanoparticle agglomeration and increase active sites,thereby improving its application potential for water remediation.This article reviewed the synthesis methods of loaded nZVI and discussed the properties and conditions of various loading materials.By summarizing the current status of research on the application of composites to emerging pollutants in water,it explored the future application prospects and potential challenges,aiming to provide insights for the efficient preparation of loaded nZVI and its broad application in managing emerging water pollutants.
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基金资助
国家自然科学基金(52270196);重庆市教委科学技术研究项目(KJQN202404306);重庆市研究生联合培养基地建设项目(JDLHPYJD2022005)
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