摘要
金属有机框架材料(MOFs)作为一种由金属节点和有机配体通过自组装连接而成的具有周期性网络结构的晶体多孔材料,因其大比表面积、高孔隙率和可修饰等特点,已被广泛应用于不同领域。然而,零维、一维和三维材料通常存在活性位点少、与污染物接触面积不足等问题,而二维MOFs纳米片具有超大的比表面积、丰富的暴露活性位点、厚度可调性及优异的机械性能等优点,可以快速有效地捕获水体中的污染物。该文综述了近5年二维MOFs纳米片在去除环境污染物方面的应用进展,重点介绍了二维MOFs纳米片的制备方法、去除污染物的主要机制及污染物种类;介绍了二维MOFs纳米片的改性策略,如复合或衍生策略可以显著提高去除效率;以密度泛函理论计算的角度揭示了MOFs与污染物内部相互作用的机制;最后,对MOFs的改性策略、相互作用机制和系统的理论指导进行了总结和展望。
Metal-organic frame materials(MOFs),a crystalline porous material with periodic network structure connected by metal nodes and organic ligands through self-assembly,have been widely used in various fields because of their high specific surface area,high porosity and modifiability.However,MOFs with zero-,one-and three-dimension usually have problems such as fewer active sites and insufficient contact area with pollutants,while two-dimensional MOFs nanosheets have the advantages of large specific surface area,abundant exposure active sites,thickness adjustability,excellent mechanical properties,as well as quick and effective capture of aqueous pollutants.Herein,the application progress of two-dimensional MOFs nanosheets in the removal of environmental pollutants in the past five years was reviewed,with the focus on the preparation method,the main pollutant removal mechanism and the types of pollutants.The modification strategies of two-dimensional MOFs nanosheets were then introduced,such as composite or derivative strategies which could significantly improve the removal efficiency.The interaction mechanism between MOFs and pollutants was discussed from the perspective of density functional theory calculation.Finally,the modification strategies,interaction mechanism and systematic theoretical guidance of MOFs were summarized and prospected.
作者
孙心怡
周露露
胡静
SUN Xinyi;ZHOU Lulu;HU Jing(School of Perfume and Aroma Technology,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《精细化工》
北大核心
2025年第9期1883-1894,共12页
Fine Chemicals
基金
国家自然科学基金项目(22078196、22278268)
上海市自然科学基金项目(22ZR1460400)
上海市青年科技英才扬帆计划资助项目(23YF1446300)。
关键词
金属有机框架
纳米片
吸附
催化
污染物
环境
metal-organic frameworks
nanosheets
absorption
catalysis
pollutants
environment
