MOF–aminoclay composites for superior CO2 capture, separation and enhanced catalytic activity in chemical fixation of CO2

Abstract

We delineate the growth and stabilization of ultra-small (2–3 nm) {Cu₃(BTC)₂(H₂O)₂·xH₂O} MOF nanoparticles on a 2D layered aminoclay template. The composite shows significant CO₂ uptake (5.35 mmol g⁻¹ at 298 K, 1 bar; 46% higher than pristine bulk MOF), superior CO₂ separation efficiency from CO₂/N₂ and CO₂/CH₄ mixtures and higher catalytic proficiency for chemical fixation of CO₂ into cyclic carbonates.