壳聚糖 /氧化石墨烯复合材料水处理技术研究进展

Research Progress on Preparation of Chitosan/Graphene Oxide Composites and its Application in Wastewater Treatment

吸附法以其简单高效及绿色经济等优点,广泛用于处理重金属废水及印染废水等难生物降解废水。近十年来,开发新型绿色环保吸附剂逐渐成为研究热点,壳聚糖(CS)/氧化石墨烯(GO)复合材料有比表面积大、官能团数量多且种类丰富等优点,是一种新型可生物降解吸附剂。大量研究表明,通过引入其他官能团或纳米颗粒对壳聚糖/氧化石墨烯复合材料进行修饰,可以进一步提高复合材料各方面性能。系统梳理了不同形态壳聚糖/氧化石墨烯的制备方法及进一步改性修饰方法,概述了其在废水处理中的研究近况。

Adsorption process is widely used to treat heavy metal wastewater,dyeing wastewater and other refractory biodegradable wastewater because of its simple,efficient and green economy.In recent ten years,the development of new green adsorbents has gradually become a research hotspot.Chitosan(CS)/graphene oxide(GO)composites have the advantages of large specific surface area,large number of functional groups and rich variety,and are a new biodegradable adsorbent.A large number of studies have shown that by introducing other functional groups or nanoparticles to modify chitosan/graphene oxide composites,various properties of the composites can be further improved.The preparation methods and further modification methods of chitosan/graphene oxide with different morphologies were systematically combed,and the recent research situation of chitosan/graphene oxide in wastewater treatment was summarized.