金属有机框架材料吸附CO2研究进展

Research Progress of Metal-Organic Frameworks in CO2 Adsorption

摘要:

为有效应对全球气候变暖，减缓温室气体排放，实现中国提出的“双碳”目标，寻找有效的CO2吸附技术具有重大的现实意义。金属有机框架（MOFs）作为一种具有高度可调性和优异孔隙结构的新型吸附材料，在CO2捕集和分离方面展现出卓越的性能，具有巨大的应用潜能，其独特、稳定的三维空间结构和高度不饱和的活性吸附位点，特别适用于低温环境中吸附CO2。该文综述了近10年来MOFs在CO2吸附领域应用的研究进展，首先阐述了MOFs吸附材料的常见类型和合成方法，然后详细探讨了影响MOFs材料吸附性能的因素以及改性手段，最后提出了优化水热合成法、构建核-壳结构复合MOFs、引入非极性基团有机配体来提高水稳定性能、与多孔固体材料复合进行改性等MOFs在CO2吸附领域的研究方向。

Abstract:

In order to against the backdrop of global warming and achieve China"s carbon peak and neutrality targets, finding effective CO2 capture technologies is of significant importance for mitigating greenhouse gas emissions. Metal-organic frameworks (MOFs), as a new type of adsorbent material with highly tunable and excellent porous structures, have garnered widespread attention from researchers in the past decade. This article elaborates on the common types of MOF adsorbent materials, synthesis methods, influencing factors, and modification approaches, delving into the main drawbacks hindering the performance improvement of MOFs adsorbent materials. Besides, the optimization of the preparation conditions of hydrothermal synthesis, the construction of composite MOFs with core-shell structures, the enhancement of water resistance by introducing organic ligands with non-polar groups and the composite modification of MOFs with porous solid materials were proposed as four important research directions in the future.