Visible-light-driven CO2 photoreduction over atomically strained indium sites in ambient air

Strain engineering offers an attractive strategy for improving intrinsic catalytic performance of a heterogeneous catalyst. Herein, we successfully create strain into layered indium sulfide (In2S3) at atomic scale via introducing oxygen coordination and sulfur vacancy using a wet-chemistry method. The atomically strained In2S3 exhibits greatly enhanced CO2 photoreduction performance, achieving a CO2 to CO conversion rate of 5.16 μmol gcatalyst−1 h−1 under visible light illumination in ambient air. In-situ spectroscopic measurements together with theoretical calculations indicate that the atomically strained In2S3 features lattice disordered defects on surface, which provides rich uncoordinated catalytic sites…

• CU
  City University of Hong Kong