Embodiments of the present disclosure describe a device for removing CO₂ comprising a gas flow inlet, a housing including a SIFSIX-3-Cu metal-organic framework (MOF) composition for sorbing and/or desorbing CO₂, and a gas flow outlet. Embodiments of the present disclosure describe an anesthetic system comprising one or more regeneratable cartridges for sorbing and/or desorbing CO₂, wherein each of the one or more regeneratable cartridge includes a metal-organic framework composition, wherein at least one of the regeneratable cartridges includes a SIFSIX-3-Cu MOF. Embodiments of the present disclosure describe an alkaline fuel cell comprising a catalyst layer including a SIFSIX-3-Cu MOF composition for sorbing and/or desorbing CO₂.