​36.<功能材料>石墨烯去除水中重金属和抗生素的研究进展, 2014, 45(23), 23001-23009

作者: 时间:2018-05-11 点击数:

ABSTRACT:Heavy metals and antibiotics pollutants share the characteristics of high stability, resistance to degradation, high toxicity, and accumulative effects. With increasing probability of synergistically toxicity effect in water and soil environment, they have a tendency to become a global problem. Graphene, one of the most popular carbon nanomaterials, has large specific surface area and high activity characteristics. As an excellent adsorbent, it has broad prospects in application in the field of environmental pollution control. Graphene oxide is the oxide form of graphene with large number of oxygen groups on its surface, it could be easily modified chemically and is more hydrophilic than graphene, it has excellent qualities as adsorbent for the removal of pollutants from aqueous solution. However, as nano powder adsorbents, graphene oxide and graphene is easy to agglomerate and difficult to be separated from water, which restrict its practical application and speed the emergence of three dimensional macro graphene aerogels. Graphene aerogels effectively solve the problem of agglomeration and separation and show better characteristics and application prospect.3D graphene has various appearances and microstructures owing to different preparation methods such as chemical vapor depositionhydrothermal method and chemical oxidation and reduction methodits shape could be exist as either bulkplate or nets. The generation of 3D graphene constructs the bridge of graphene from micro investigation to macro investigation. In recent yearsthe investigations on pollutants adsorption on graphene are wide and deepnot only the improvements of preparation methods to get better characteristics,but also broaden the kinds of pollutants as adsorbate. In this paperadsorption of heavy metals and antibiotics on graphene,graphene oxide and graphene aerogel including the modification of graphene to become better adsorbents in recent years are reviewedmoreoverthe research trend and hotspots are explored and the trend of future research is outlined.

 

 

 

 

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