Strongly coupled and highly-compacted zirconium aminobenzenedicarboxylate crystal membranes for accelerating carbon dioxide capture

Abstract

This study presents the fabrication of a UiO-66-NH₂ composite membrane on a porous carbon cloth–polypyrrole substrate (CC–PPy@UiO-66-NH₂) that demonstrates strongly coupled and highly ordered features to enhance CO₂ capture efficiency. This free-standing configuration exhibits a higher adsorption kinetics with a slope of 0.48 mg g⁻¹ min⁻¹ for CO₂ and superior adsorption selectivity, demonstrating that the adsorption kinetics rate of the CC–PPy@UiO-66-NH₂ composite membrane for CO₂ is approximately twice that of bulk UiO-66-NH₂ (0.27 mg g⁻¹ min⁻¹) crystals at a bar.