Organic frameworks (MOFs, COFs, and HOFs) based membrane materials for CO2 gas-selective separation: A systematic review
Wenjia Luo, Huan Li, Minghu Jin, Jian Liu, Xi Zhang, Guoxian Huang, Tao Zhou, Xingwu Lu
Abstract
Membrane separation technology is characterized by low energy consumption, high efficiency, simple operation, and no phase change in the separation process compared to traditional separation technologies in the chemical industry. Therefore, researchers believe that membrane separation technology is the most popular green and efficient separation technology today. Among various membrane materials, organic frameworks (MOFs, COFs , and HOFs), with their orderly arranged pores and adjustable pore sizes, offer abundant mass transfer channels. These features, combined with controllable membrane thickness and surface properties, facilitate the efficient transfer of gases. Moreover, the designable pore structures and surface functionalities hold promise for constructing effective composite membranes for specific gas molecule separations. This paper presents the latest research advances on organic framework materials and discusses their key characteristics in membrane structure design. It delves into the design and construction of membranes based on organic frameworks (MOFs, COFs , and HOFs), aiding in a comprehensive understanding of the structure-performance-function relationships. Additionally, the role of synthesis methods and microstructure in CO 2 gas separation is emphasized. Finally, the advantages and challenges of organic framework materials in the field of gas separation are discussed, along with future research and development opportunities.