Carbon dioxide, considered one of the main greenhouse gasses, has a major impact on climate change. Its atmospheric concentration is already above 400 ppm and is predicted to hit alarming levels in the 2050s if the current situation is not addressed properly. Emission sources are numerous and contribute differently to the problem. They range from deforestation and cement manufacturing to the burning of fossil fuels such as natural gas, petroleum, and coal. Consequently, sectors relying heavily on fossil fuels, such as power generation, industrial, and transportation sectors, are the main sources of CO 2 emissions worldwide. Current carbon capture and storage technologies have the potential to mitigate climate change. However, they are energy intensive. Chemical absorption using amine solutions to recover CO 2 from flue gas streams is well developed and deployed at a commercial scale. Also, polymeric membranes are being used commercially to separate CO 2 from syngas. Reaching the full potential within the time limit imposed by the fact that CO 2 emissions are still increasing has motivated research to capture CO 2 directly from atmospheric air. Adsorption-based technologies are promising candidates that address these challenges; to efficiently capture CO 2 from a wide range of sources.