氧化石墨烯对水环境中金属离子的吸附作用研究进展

Adsorption of metal ions to graphene oxide in aquatic environment

氧化石墨烯是一种具有2D晶型独立片层结构的新型碳纳米材料,其厚度仅为一个碳原子的高度.由于其具有吸附率高、易制得、可生物降解和可回收再利用等特点,近年来在水处理研究中受到越来越多的关注.本文围绕氧化石墨烯的结构和性质,阐述了氧化石墨烯对水环境中金属离子的主要吸附机制,讨论并总结了影响氧化石墨烯吸附能力的主要环境因素,并对氧化石墨烯的应用前景及研究趋势进行了展望.

Graphene oxide（GO） is a new class of carbonaceous nanomaterial with two-dimensional layer structure. The thickness of the GO flakes is the same as that of one carbon atom. GO shows strong adsorption affinities to a number of environmental contaminants. And it could be obtained easily. In the meanwhile,GO is biodegradable and recyclied. Thus,it has received more and more attention in water treatment. Based on the structure and properties of GO,the adsorption mechanisms of metal ions to GO are summarized in this paper,and the factors that influence the adsorption of metal ions to GO are analyzed. An outlook of future research directions and applications of GO in aquatic environment was also provided.