| 共价有机骨架复合材料去除水体中重金属离子的研究进展 |
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| 引用本文： | 王雪梅,季红,崔兴兰,王芳兵,刘娅聪,杜新贞.共价有机骨架复合材料去除水体中重金属离子的研究进展[J].环境科学研究,2021,34(5):1168-1176. |
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| 作者姓名： | 王雪梅 季红 崔兴兰 王芳兵 刘娅聪 杜新贞 |
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| 作者单位： | 西北师范大学化学化工学院,甘肃 兰州 730070;甘肃省生物电化学与环境分析重点实验室,甘肃 兰州 730070;西北师范大学化学化工学院,甘肃 兰州 730070 |
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| 基金项目： | 国家自然科学基金项目21777129 |
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| 摘 要： | 共价有机骨架复合材料（covalent organic framework composites，COFs）是由轻元素C、O、N、B等以强共价键结合而成的一类具有二维或三维晶体结构的新兴多孔聚合物材料.由于它们具有孔道有序可调、比表面积大、孔隙率高、结构稳定及官能团丰富可进行后修饰等优点，在污染物吸附去除领域受到了广泛关注.本文总结了COFs复合材料的最新合成策略（"自下而上"、合成后修饰和混合合成策略）和COFs复合材料在水体中去除重金属离子方面的研究进展，并对其应用前景进行了展望.近年来，运用吸附方式从环境水体中去除重金属离子在环境治理领域颇受关注.COFs复合材料作为一种新型多孔结晶材料，具有优异的吸附性能，可从水溶液中有效去除重金属离子，因此具有广阔的应用前景.COFs复合材料吸附重金属离子的方式由化学吸附和物理吸附组成，且化学吸附占主导地位.现有的COFs复合材料合成方法因其存在时间较长、成本较高及产率较低等缺点，阻碍了其在环境分析领域中的实际应用，为增加效率、节约成本及实现工业化生产，迫切需要进一步开发合成COFs及复合材料的更多新方法.
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| 关 键 词： | 共价有机骨架材料 重金属离子 吸附 去除 |
| 收稿时间： | 2020-07-20 |
Progress in Removal of Heavy Metals from Water with Covalent Organic Framework Composites |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China2.Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, Lanzhou 730070, China |
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| Abstract: | Covalent organic framework composites (COFs) is a kind of emerging porous polymer materials with two-dimensional or three-dimensional crystal structure, which are formed by strong covalent bonding of light elements C, O, N, B, etc. Due to their adjustable pore size, large specific surface area, high porosity, stable structure and chemical modification, COFs play an important role in the adsorption and removal of pollutants. The latest synthesis strategies of COFs mainly include 'bottom-up', post-synthesis modification and hybrid synthesis strategies. Moreover, the research progress of COFs in the adsorption and removal of heavy metals from water was summarized, and its application prospect was also discussed. The use of adsorbents to remove heavy metals from environmental waters plays a vital role in the field of environmental governance. As a new type of porous crystalline material, COFs have excellent adsorption performance and can effectively remove heavy metals from aqueous solutions. The adsorption mechanism is mainly composed of chemical adsorption and physical adsorption, and the dominant mechanism is chemical adsorption. The synthesis methods of COFs have some disadvantages, such as long time, high cost and low yield, which hinder their practical application in the field of environmental analysis. In order to increase efficiency, save cost and realize industrial production, it is urgent to develop new methods to synthesize COFs and composite materials. |
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