Research Progress of CO₂ Adsorption Technology of Metal-organic Frameworks Materials

A series of environmental issues have received increasing attention, such as global warming caused by the greenhouse influence. Carbon dioxide (CO₂) contributes the most to the greenhouse influence. The goal of China is carbon neutrality and carbon peak. The premise of achieving the goal is to improve the emission reduction and control of CO₂. In the process of achieving the dual-carbon goal, carbon capture is crucial. Metal-organic skeleton materials, as a new type of adsorbent material, can further improve its application of capturing CO₂ in practice. In this paper, the classification of metal-organic frameworks materials is clarified. The advantages and disadvantages of several synthesis methods as well as the advantages and disadvantages of modification methods are analyzed. The mechanism of CO₂ adsorption by this material is explored. The adsorption effects under single-component and multi-component conditions are compared. The conventional hydrothermal method is optimized by using acetate or hydrogen chloride assisted heating as well as the modification method is optimized by using different amino groups. Finally, the amino loading methods were proposed as two important research directions in the future. The prospect of metal-organic frameworks material adsorbents is foreseen, which provides support for further research on CO₂ adsorption by metal-organic frameworks materials.