溶液pH值对石墨烯及其复合材料吸附重金属离子的影响  

Effect of pH value on graphene-containing composite materials for heavy metal ions adsorption

作　　者：曹明莉[1] 盛智博 张会霞[1] 

机构地区：[1]大连理工大学土木工程学院,辽宁大连116024

出　　处：《功能材料》2016年第9期9051-9056,共6页Journal of Functional Materials

摘　　要：重金属污染对人类赖以生存的环境带来诸多负面的影响,因此如何解决重金属污染是当前亟须解决的重要问题之一。自石墨烯问世以来,由于其优异物理化学性质引起了科学界广泛的关注,较大的比表面积和较高机械强度等特性都使石墨烯及其复合材料成为理想的吸附材料,特别是用于重金属离子的吸附。但石墨烯复合材料对水体中重金属离子吸附性能的受到很多因素有影响如反应时间、温度、体系pH值等,其中pH值是最重要的影响因素之一。以影响吸附的因素为背景,以pH值为切入点,较为详细地综述了pH值对石墨烯及其复合材料对重金属吸附的影响,并系统地分析和讨论了pH值对吸附影响的原因和机理。最后,对石墨烯及其复合材料应用于吸附水体重金属离子的前景进行展望。Thepollution of heavy ions are hazardous to environment.Therefore,it is essential to tackle heavymetal contamination.Graphene has excellent physical and chemical characteristics,which arouse wide attention in scientific community,so that graphene-containing composite materials could be served as an ideal absorbent,especially for heavy metal ions,due to its large specific surface area and mechanical strength.For the effect of graphene-composite materials on heavy metal ions,itis subject to many factors,such as contact time,temperature,pH value and so on,but the most relative important one is pH value.This paper not only gives an overview of the effect of pH value on adsorption of graphene-containing composite materials,but also discusses reason and effect mechanism.And,in the last of this paper,the challenges and application prospectsof graphenecontaining composite materials are mentioned and commented.

关 键 词：PH值 石墨烯 复合材料 重金属离子 吸附 

分 类 号：X703[环境科学与工程—环境工程]