壳聚糖稳定纳米铁材料在水环境修复中的应用

Application of Chitosan Stabilized Nano Iron Materials in Water Environment Restoration

壳聚糖稳定纳米铁材料是一种新型复合材料,具有反应活性高、稳定性好、还原性强等特点,因此在水环境修复领域备受关注和应用。纳米铁材料是一种优良的水环境修复功能材料。但纳米铁材料稳定性差,极易氧化、团聚,严重降低其反应活性;使用壳聚糖作为稳定剂,生成壳聚糖包裹层显著增加纳米铁材料的稳定性,抑制纳米铁材料的团聚效应,可制备出壳聚糖稳定纳米铁材料,在保持纳米铁良好性能的同时,提高稳定性。本文阐述壳聚糖纳米稳定纳米铁材料在水环境应用基础上修复中的研究进展,指出了壳聚糖稳定纳米铁材料在实践中存在的问题,并对壳聚糖稳定纳米铁材料的发展前景进行了分析。

Chitosan stabilized nano-iron material is a new kind of composite material,which has the characteristics of high reactivity,good stability and strong reducibility.Therefore,it has attracted much attention and application in the field of water environment remediation.Nanoscale iron material is an excellent functional material for water environment restoration.However,the stability of nano-iron materials is poor,and it is easy to oxidize and agglomerate,which seriously reduces its reactivity.Using chitosan as stabilizer,the formation of chitosan coating can significantly increase the stability of nano-iron materials,inhibit the agglomeration effect of nano-iron materials,and prepare nano-iron materials stabilized by chitosan,which can maintain the good properties of nano-iron.At the same time,improve stability.In this paper,the research progress of chitosan nano-stabilized nano-iron materials on the basis of its application in water environment was reviewed.The problems existed in the practice of chitosan-stabilized nano-iron materials were pointed out,and the development prospects of chitosan-stabilized nano-iron materials were analyzed.