氧化石墨烯基材料吸附重金属阳离子研究进展

Progress on the Removal of Heavy Metal Ions by Adsorption of Graphene-Based Nanomaterials

环境污染中的重金属阳离子通过生物链进入人体,并在体内不断累积,严重影响人体健康。因此,有效去除重金属阳离子是目前社会研究热点。氧化石墨烯(GO)具有较大的表面积、可功能化改性的官能团及其优良的力学性能等特点,在去除重金属阳离子方面的研究获得了巨大进展。氧化石墨烯通过表面官能团改性引入对重金属具有很强亲和力的杂原子,是解决其团聚倾向和处理后分离困难的有效途径。综述了具有含氧、含氮、含硫表面官能团功能化GO复合材料在重金属阳离子吸附中的应用,展望了GO复合材料吸附重金属阳离子未来研究方向。

The massive introduction of toxic heavy metal ions in the process of industrialization leads to the increasingly serious heavy metal pollution in the environment.Therefore,the effective removal of heavy metal ions is a current social research hotspot.graphene oxide(GO)has the characteristics of large surface area,functionalized functional groups and excellent mechanical properties,and has achieved great development in the removal of heavy metal ions.GO introduces heteroatoms with strong affinity for heavy metals through surface functional group modification,which is an effective way to solve its agglomeration tendency and separation difficulties after treatment.This paper summarizes the application of the functional GO composites in the adsorption of heavy metal ions.Furthermore,the interaction between the adsorbent and heavy metal ions influenced by pH and surface functional groups is discussed.The future research direction of heavy metal ions adsorption by GO composites is discussed.