Infrared Photothermal Catalytic Reduction of Atmospheric CO2 Into CO with 100% Selectivity via Dual‐Plasmon Resonance Conductor

Abstract Today, the fabrication of carbon monoxide (CO) in industry customarily necessitates elevated temperature and pressure. Concurrently, the harnessing of infrared (IR) light, which constitutes ≈50% of solar energy, has predominantly remained unexploited due to a pronounced contradiction between the utilization of IR light and CO 2 photoreduction. To break the above limitation, a dual‐plasmon resonance conductor with a metallic nature is designed, which realizes the synthesis of CO with 100% selectivity from infrared photothermal catalytic reduction of atmospheric carbon dioxide (CO 2 ). Taking the Au particles loaded Cu 7 Te 4 nanowires as an example, the surface dual‐plasmon resonance coupling effect can optimize the three critical processes of CO 2 photoreduction, in which it is illustrated that the dual‐plasmon resonance effect lowers the thermodynamic reaction energy barrier, facilitating the selective generation of CO products. Consequently, the Au‐Cu 7 Te 4 nanowires manifest a CO evolution rate of ≈2.7 µmol g −1 h −1 with 100% selectivity for atmospheric CO 2 reduction driven by IR light, several times higher than that of the Cu 7 Te 4 nanowires.