Progress in the application of sulfidated nano zero-valent iron in the treatment of environmental pollutants
Describing the preparation of sulfidated nano zero-valent iron,factors affecting treatment effec-tiveness,application scenarios,toxicity and recycling processes.As an emerging material with strong ad-sorption and reduction properties,nano zero-valent iron(nZVI)is widely used for the removal of chlorina-ted hydrocarbons,pesticides,and heavy metals from soil,groundwater,and other environments.However,its easy passivation and poor electronelectivity limit its practical treatment effect to a certain extent.In re-cent years,scholars have changed the properties of nZVI by various modification means.Among them,the synthesized sulfidated nano-zero-valent iron(S-nZVI)has stronger reducibility,electron selectivity and sta-bility,S-nZVI has unique structural features,which makes it has a broad application prospect in the treat-ment and remediation of water and soil environments,and further clarification of the catalytic mechanism of the active site is the key to determine the structure-activity relationship of S-nZVI.
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