Visible-light driven overall conversion of CO2 and H2O to CH4 and O2 on 3D-SiC@2D-MoS2 heterostructure.
Authors of this article are:
Wang Y, Zhang Z, Zhang L, Luo Z, Shen J, Lin H, Long J, Wu JCS, Fu X, Wang X, Li C.
A summary of the article is shown below:
Visible-light driven overall reduction of CO2 with H2O into hydro-carbons and O2 remains a long-standing grand challenge in energy field. Herein, we report a marigold-like SiC@MoS2 nanoflower with a unique Z-scheme structure that efficiently achieves the over-all conversion of gas phase CO2 with H2O (CO2 (g) + 2H2O (g) = CH4 + 2O2) without any sacrificial reagents under visible light (λ ≥ 420 nm) irradiation. The SiC@MoS2 photocatalyst exhibits the CH4 evolution as high as 323 μL·g-1·h-1 and nearly stoichiometric O2 evolution of 621 μL·g-1·h-1. The activity is stable throughout 5 cycle reactions of total 40 h. To the best of our knowledge, this is a record for the stoichiometric conversion of CO2 and H2O gas phase on heterogeneous photocatalyst to CH4 and O2 under visible light irradiation. This work demonstrates a breakthrough in artificial photosynthesis with highly efficient and stable hybrid photocatalyst constructed by combining 2D semiconductor and 3D semiconduc-tor into Z-scheme 1D heterojunction for visible-light driven overall conversion of CO2 and H2O.
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