Design strategies and advantages of metal-organic frameworks@ lignocellulose-based composite aerogel for CO2 capture: A review

Abstract

Global warming induced by greenhouse gas emissions represents one of the most significant challenges of our time. In response to this issue, extensive research is being conducted on capture and storage of carbon dioxide (CO₂) from stationary carbon sources. Metal-organic Frameworks (MOFs) are widely recognized for their efficacy in gas adsorption and separation due to their remarkable structural integrity, high porosity, and versatility. However, the crystalline and powdered forms of MOFs often limit their practical applications because of their inherent hardness and brittleness. Lignocellulose composite aerogels (LCG) possess high porosity and a substantial specific surface area. Their three-dimensional network facilitates the effective embedding of MOFs crystals within the pores, thereby minimizing the loss of MOFs. This characteristic positions LCG as ideal substrates for enhancing the separation and adsorption performance of CO₂ capture. This paper reviews the recent advancements in MOFs@Lignocellulose-based composite aerogel (MOFs@LCG), focusing on the preparation method, interaction mechanisms, strategies for improving adsorption performance, and applications in CO₂ capture. This review presented herein are significant for advancing research and development in the field of CO₂ adsorption and separation.