Recent progress in porous organic polymers and their application for CO2 capture

Carbon capture, storage, and utilization (CCSU) is recognized as an effective method to reduce the excessive emission of CO2. Absorption by amine aqueous solutions is considered highly efficient for CO2 capture from the flue gas because of the large CO2 capture capacity and high selectivity. However, it is often limited by the equipment corrosion and the high desorption energy consumption, and adsorption of CO2 using solid adsorbents has been receiving more attention in recent years due to its simplicity and high efficiency. More recently, a great number of porous organic polymers (POPs) have been designed and constructed for CO2 capture, and they are proven promising solid adsorbents for CO2 capture due to their high Brunauer-Emmett-Teller (BET) surface area (S-BET), adjustable pore size and easy functionalization. In particular, they usually have rigid skeleton, permanent porosity, and good physiochemical stability. In this review, we have a detailed review for the different POPs developed in recent years, not only the design strategy, but also the special structure for CO2 capture. The outlook of the opportunities and challenges of the POPs is also proposed. (C) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.

Automated summary

Carbon capture, storage, and utilization (CCSU) is an effective method for reducing CO2 emissions. Amine aqueous solutions are efficient for CO2 capture due to their large capacity and high selectivity. However, solid adsorbents have gained attention in recent years for CO2 adsorption due to their simplicity and high efficiency. Porous organic polymers (POPs) have shown promise as solid adsorbents for CO2 capture due to their high surface area, adjustable pore size, and easy functionalization. This review provides a detailed overview of different POPs developed in recent years, discussing their design strategies, unique structures, and highlighting the opportunities and challenges associated with POPs.