作者简介:杜佳媛(1993-),女,黑龙江哈尔滨人,硕士研究生,主要从事水资源利用与水污染控制研究.E-mail:dujiayuan@tju.edu.cn
收稿日期: 2016-06-30
修回日期: 2016-10-21
网络出版日期: 2016-11-20
基金资助
国家自然科学基金重点项目“典型人工纳米颗粒在不同生态系统中的环境行为及食物链中的关键过程”(编号:41530642)资助
版权
Adsorption Behavior and Mechanism of Environmental Pollutants on Graphene Oxide
First author:Du Jiayuan(1993-), female,Haerbin City, Heilongjiang Province, Master student. Research areas include utilization of water resources and control of water pollution.E-mail:dujiayuan@tju.edu.cn
Received date: 2016-06-30
Revised date: 2016-10-21
Online published: 2016-11-20
Supported by
Project supported by the State Key Program of National Natural Science Foundation of China “Environmental behaviors of typical engineered nanoparticles in different ecosystems and their key processes along food chains”(No.41530642)
Copyright
杜佳媛 , 魏永鹏 , 刘菲菲 , 代燕辉 , 赵建 , 王震宇 . 氧化石墨烯对环境污染物的吸附行为及吸附机理[J]. 地球科学进展, 2016 , 31(11) : 1125 -1136 . DOI: 10.11867/j.issn.1001-8166.2016.11.1125
Graphene oxide, as an emerging material for contaminants removal,possesses relatively large specific surface area, and it shows good dispersion in water phase due to the hydrophilicessence resulted from abundant oxygen-containing functional groups on the edge, thus leading to a potential excellent adsorbent. Current studies revealthat, because graphene oxide is negatively-charged in a wide range of pHs, the removal efficiency of heavy metals and cationic dyes by graphene oxide is significantly higher than by traditional adsorbents, like activated carbon. However, its applications are still limited due to its structural defects. For example, its π domain is destructed during fabrication process. Therefore, certain structural modifications need to be conducted on the purpose of improving its performance, achieving a better result in water purification. This paper presented the preparation and structure of graphene oxide, and reviewed the adsorption behaviors, adsorption mechanisms, adsorption models and influence factors of heavy metals and organic pollutants on graphene oxide and its composites, respectively. In view of unresolved issues, further research should focus on comprehensive adsorption mechanisms, more facile and effectivemethods for structural modifications and the treatment of graphene oxide after adsorption process.
Key words: Graphene oxide; Composite; Adsorption; Heavy metals; Organic pollutant.
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