Carbon Dioxide Capture in Metal-Organic Frameworks

Abstract

Excessive carbon dioxide emissions have caused several environmental problems. This has an unpromising impact on the Earth's ecosystem. Metal-organic frameworks (MOFs) attracted more and more attention because of their extraordinary specific surface area, adjustable framework and excellent stability in the effective capture and conversion of carbon dioxide. This article introduced the main synthesis methods of MOF materials, including ionothermal synthesis, mechanochemical synthesis, sonochemical synthesis and ultrasound synthesis method. Each synthesis method of MOFs has its advantages such as shorter reaction times or faster screening rates, which contribute to the development of the synthesis of MOFs. The key evaluation metrics for carbon dioxide capture using MOFs including adsorption isotherm, adsorption ability, enthalpy and high selectivity also were discussed, which have a direct impact on the capture of carbon dioxide. Additionally, the main carbon capture by MOFs in power plants, such as post-combustion capture, capture before combustion and oxy-fuel combustion were also highlighted.