Photothermal synthesis of a CuO &FeO catalyst with a layered double hydroxide-derived pore-confined frame to achieve photothermal CO hydrogenation to CO with a rate of 136 mmol min g .

Solar-driven CO conversion into the industrial chemical CO the reverse water-gas reaction is an ideal technological approach to achieve the key step of carbon neutralization. The high reaction temperature is cost-free due to the photothermal conversion brought about by solar irradiation and is beneficial to the catalytic efficiency. However, the thermostability of adopted catalysts is a great challenge. Herein, we develop an photothermal synthesis to obtain a CuO &FeO catalyst with a layered double hydroxide-derived pore-confined frame. The optimized sample delivers a CO generation rate of 136.3 mmol min g with the selectivity of ∼100% at a high reaction temperature of 1015 °C. The efficient catalytic activity can be attributed to the fact that the pore-confined frame substrate prevents the growth of CuO and FeO nanoparticles during the high-temperature reaction and the basic groups on the substrate promote the adsorption and activation of CO.