Amine-based CO2 capture aided by acid-basic bifunctional catalyst: Advancement of amine regeneration using metal modified MCM-41

•Metal modified MCM-41 was introduced to advance CO2 capture technology.•The catalyst showed enhanced effect on CO2 absorption and desorption in the MEA.•Catalyzed-CO2 desorption performance was increased to 206–337%.•Catalytic activity of catalyst relies on the Brϕnsted acid sites and basic sites.