土壤2024，Vol.56Issue(4)：697-710,14.DOI:10.13758/j.cnki.tr.2024.04.002
改性纳米零价铁用于水土环境重金属污染修复的研究进展
Modified Nanoscale Zero-valent Iron for Remediation of Heavy Metal Contamination in Soil and Water Environments:A Review
摘要
Abstract
Heavy metal pollution threatens human health due to its bioaccumulation and toxicity.Nanoscale zero-valent iron(nZVI)is widely used for heavy metal pollution remediation in soil and water environments due to its excellent heavy metal removal ability.But its disadvantages,such as easy agglomeration,oxidation,passivation,and poor electroneutrality,limit its practical application.In this paper,by summarising the different modification methods of nZVI and their effects on the physicochemical properties,the reaction mechanism of modified nZVI on heavy metals and the influencing factors of its application in soil environment were reviewed,and the dispersibility,specific surface area and electron transfer efficiency of nZVI were enhanced from the perspective of optimised modification of the material to achieve the high efficiency of heavy metal removal.Meanwhile,this paper pointed out the problems of nZVI in remediation of heavy metals in aqueous soil environments,and looked forward to the challenges faced by nZVI in the study of soil and water pollution remediation,providing ideas for the synthetic modification and application of nZVI.关键词
纳米零价铁/重金属/改性/反应机理/电子传递/协同作用Key words
Nanoscale zero-valent iron/Heavy metals/Modified/Reaction mechanism/Electron transport/Synergistic effect分类
资源环境引用本文复制引用
谢剑雄,钟杰,韦行,黄玲,孙梦强,陈志良..改性纳米零价铁用于水土环境重金属污染修复的研究进展[J].土壤,2024,56(4):697-710,14.基金项目
国家自然科学基金重点项目(U22A20606,42377262)、广西重点研发计划项目(桂科AB24010113)和乡村振兴战略专项资金省级项目(2023KJ471)资助. （U22A20606,42377262）
