Advance of ultrathin 2D porous nanosheets in water treatment

被引：0
|
作者：
Huang C. [1 ,2 ]
Wang S. [1 ,2 ]
Fan Y. [2 ,3 ]
Jian M. [4 ,5 ]
Tang C. [1 ]
Liu R. [2 ,6 ]
机构：
[1] School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang
[2] State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
[3] School of Environment, Northeast Normal University, Jilin
[4] School of Materials and Energy, Guangdong University of Technology, Guangzhou
[5] Department of Chemical Engineering, Monash University, Victoria
[6] Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 12期
关键词：
Adsorption; Heavy metals; Organic dyes; Radioactive elements; Two-dimensional porous nanosheets;
D O I：
10.16085/j.issn.1000-6613.2021-0092
中图分类号：
学科分类号：
摘要：
Two-dimensional (2D) nanosheets are a kind of appealing porous materials. As a new type of highperformance adsorbent, the ultrathin 2D porous nanosheets have the advantages of high specific surface area, atomic thickness and abundant exposed active sites (organic or inorganic) in comparison with traditional adsorption materials. The pollutants can be selectively captured from aqueous solution quickly and effectively. This paper reviewed the latest progress of three representative 2D porous nanosheets [metal organic frameworks (MOFs) and covalent organic frameworks (COFs)] as excellent adsorbents for the removal of organic dyes, toxic heavy metals and radioactive elements from water environment. The structural characteristics and physicochemical properties of these compounds were introduced, and four commonly used synthetic methods were summarized. The advantages, disadvantages and challenges of the four methods were analyzed, and the characteristics of different synthesis methods were compared. The adsorption conditions and performance of ultra-thin 2D porous nanosheets for various pollutants in water were described, and the relevant adsorption mechanisms were systematically summarized and compared. The regeneration properties of materials were discussed, and the problems that may be encountered in the process of regeneration were introduced and analyzed. Finally, in view of the shortcomings and complex synthesis conditions of the ultra-thin 2D porous nanosheets, the optimization direction of the material synthesis, the development of green non-toxic or low-toxic new technologies and the improvement of reuse efficiency would be the development direction in the future. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：6859 / 6875
页数：16
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