Low-cost, rare-earth-free material for carbon recycling

To improve carbon recycling and reduce emissions, researchers at Science Tokyo developed iron-substituted calcium titanate (Fe-doped CaTiO3) as an environmentally friendly support material for chemical looping, a process that converts carbon dioxide (CO2) into carbon monoxide for fuel and chemical production. By substituting iron into CaTiO3, the material gained oxygen vacancies and improved ion and electron transport, accelerating CO2 conversion. Built from widely available, low-cost elements, the material could help enable scalable carbon recycling.