Chemical Sciences

CO2 is the principle ingredient of green house gases and a good indicator of air pollution in the atmosphere. Hence, it is necessary to reduce the amount of CO2 before it is exhausted in the atmosphere. CO2 capture by certain compounds finds application at fossil fuel power plants, fuel processing plants as well as various industrial plants. When the CO2 containing gas comes in contact with solid sorbant that is capable of capturing the CO2 it is easily sorbed by the material. Highlights • Spontaneous CO2 capture in nano-CaFeO2.5 exposed for different durations in air. • Rapid CO2 capture ability in 2-min carbonation–calcination cycles in TGA at 500 °C. • Negligible decay in CO2 capture capacity of nano-CaFeO2.5, even after 30 cycles. • Change in morphology to nano-sheets after carbonation–calcination cycles. • Nano-CaFeO2.5, a promising material for CO2 capture in hot industrial exhaust gases