Recent progress on direct air capture of carbon dioxide

Direct air capture (DAC) has received tremendous attention as a negative carbon emission technology that could facilitate the addressing of global climate change. In this work, we sys-tematically summarized the latest progress on the develop-ment of direct air capture and comprehensively reviewed the properties and performance of DAC adsorbents, which are categorized as physisorption and chemisorption according to sorption mechanisms. The unresolved issues and possible improvements of traditional DAC adsorbents for CO2 capture are pointed out. We highlight the potential of novel MMO-supported solid amine materials for DAC due to its excellent CO2 adsorption capacity, superior regenerability, and ease of scaling up. This review paves the way for the understanding of the intrinsic mechanism and the practical development of DAC technology.