石墨烯复合气凝胶的制备及在重金属离子处理中的应用

Sythesis of Graphene Composite Aerogels and Their Applications in Heavy Metal Ions Treatment

石墨烯复合气凝胶是以(氧化)石墨烯为主体形成的三维网状交联的多孔材料,因其具有超高的比表面积、良好的结构稳定性、优异的机械性能以及独特的网状交联结构,被广泛应用于废水处理。追踪国内外的相关研究进展,系统介绍了水热还原法、化学交联法、自组装法和模板法制备石墨烯复合气凝胶的方法,并对其优缺点进行对比。重点论述了石墨烯复合气凝胶在重金属离子吸附方面的应用,并对其在大规模生产和实际应用中存在的问题及研究前景进行展望。

Graphene composite aerogels are three-dimensional grapheme(oxide)-based porous materials with well cross-linked networks.The composite aerogels have the advantages of ultra-high specific surface, good structural stability, excellent mechanical properties and unique network crosslinking structure, which are widely used in wastewater treatment.Relevant research progress at home and abroad was tracked, the preparation methods of graphene composite aerogels, such as hydrothermal reduction method, chemical crosslinking method, self-assembly method and template method were introduced systematically, and the advantages and disadvantages of graphene composite aerogel were compared.Application of graphene composite aerogels in heavy metal ions adsorption was analyzed, and the problems and research prospects of its large-scale production and practical application were prospected.