Review on applications of metal–organic frameworks for CO2 capture and the performance enhancement mechanisms. (July 2022)

• Record Type: Journal Article
• Authors: Li, Lirong; Jung, Han Sol; Lee, Jae Won; Kang, Yong Tae
• Is Part Of: Renewable & sustainable energy reviews. Volume 162(2022)
• Publication Date: 2022-07
• Subjects: Adsorption capacity of MOFs -- CO2 adsorption enhancement mechanisms -- CO2 adsorption isotherms -- Metal-organic frameworks -- Self-diffusion coefficient; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.rser.2022.112441
• Languages: English
• ISSNs: 1364-0321

Abstract

Abstract: Concern about global warming has led to substantial global-scale efforts to remove CO2 from both emission sources and the atmosphere. Metal–organic frameworks, which may be considered a new class of porous materials, exhibit a high working capacity at low CO2 concentrations, owing to their ultrahigh surface area as well as large inner spaces and exterior channels. In this study, diverse of metal–organic frameworks have been clearly presented, including the definitions, origin of the nomenclatures, and development and synthesis methods. Furthermore, research efforts on MOF-based CO2 adsorption and storage have been reviewed, including the CO2 uptake capacity, gas molecule diffusivity, adsorption heat, and binding sites. We also review the numerical methods employed in the visualization of the CO2 adsorption process in MOFs and suggest some features of simulations for comparison with experiments. Finally, a new viewpoint on the adsorption mechanisms of CO2 on MOFs is proposed based on our own research; to this end, the CO2 adsorption isotherms and self-diffusion coefficients of a series of chemically similar MOFs are carefully discussed. Highlights: MOF families are comprehensively discussed involving definition, nomenclatures, development as well as their synthesis. Issues of the comparison of simulation to experiment on CO2 -MOF interactions are clarified. The balance between CO2 molecule diffusivity and the confinement effect of MOFs is discussed. Self-diffusion coefficients of a series of chemically similar MOFs are estimated.