Photothermal reverse-water-gas-shift over Au/CeO2 with high yield and selectivity in CO2 conversion

Photothermal reverse-water-gas-shift is realized with high conversion rate and selectivity of CO in the case of Au/CeO2 catalyst. Moreover, photothermal reaction rate is much higher (>10 times) than that performed under thermal condition. As indicated by the results of in-situ infrared spectroscopy and kinetic experiments, the special role of light is found to be related with the promotion of hydrogen-splitting step. The robust Au/CeO2 catalyst exhibits stable activity and CO selectivity under long-term light irradiation. It is expected that the combination of catalysts and light may afford new perspectives for the CO2 hydrogenation.