石墨烯及其复合材料在重金属离子吸附方面的应用  

Graphene-containing composite materials for heavy metal ions adsorption

作　　者：曹明莉[1] 张会霞[1] 张聪[2] 盛智博 

机构地区：[1]大连理工大学土木工程学院,辽宁大连116024 [2]江南大学环境与土木工程学院,江苏无锡214000

出　　处：《功能材料》2016年第8期8001-8007,共7页Journal of Functional Materials

摘　　要：重金属污染是目前最为严峻的环境污染问题之一,因此,寻找高效的纳米材料去除水中的重金属变的尤为重要。作为碳系家族的新成员,石墨烯已经成为万众瞩目的研究热点。由于具有超大的比表面积、较高的机械强度和稳定的化学性质等突出优势,石墨烯不仅在场效应晶体管、催化、药物输送等领域应用前景广阔,而且作为吸附材料在重金属离子处理方面的潜能也备受关注。综述了近年来有关石墨烯及其复合材料吸附水溶液中重金属离子的研究,系统介绍了石墨烯基材料对重金属离子的吸附效果、吸附机理、影响因素,及该材料的脱附再生性能。最后,对石墨烯及其复合材料研究过程中的挑战进行了评述,同时对它们在水处理过程中的应用前景做了深入探讨和展望。Contamination of natural water with heavy metal ions is a significant global issue. Therefore, it becomesparticularly important to look for a kind of efficient nanometer materials to remove heavy metals in thewater.As a new member of the carbon materials, graphene has become a rapidly rising star on the horizon ofmaterialsscience. Due to its large specific surface area, high mechanical strength, chemical stability and so on,graphene （GN） has broad application prospect in field-effect transistors,catalysis, drug delivery and other areas.Importantly, it could be used as an ideal adsorbent candidate for water purification, which has been attractingsignificant attention in recent years. This paper gives an overview of recent literatures for the application ofgraphene-containing compositesin heavy metal ions removal from wastewater. The adsorption capacity, adsorptionmechanism, the factors affecting adsorption and recycling performance of graphene-based materials forheavy metal ions are also introduced. In the end, the challenges of research of graphene-based materials arecommented on the application prospects in water treatment are discussed.

关 键 词：石墨烯 重金属离子 吸附 水处理 

分 类 号：X703[环境科学与工程—环境工程]