Air pollution poses a major threat to human health, with 2.5-micrometre particle matter (PM2.5) of particular concern due to its ability to penetrate deep into the respiratory system. This project explores the potential of activated carbon as a material to adsorb PM2.5 in urban areas. By combining activated carbon with bioplastic, a new composite material has been created that is printable, malleable, and recyclable. Extensive research on material properties and fabrication techniques has resulted in an optimised approach that combines 3D printing and scraping. This project proposes a new architectural material that captures PM 2.5 from the air to be used for breathing pods or as a module in polluted London underground stations, offering a solution to the urgent problem of air pollution while promoting sustainable urban environments.