Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light

Indrajit Shown, Satyanarayana Samireddi, Yu-Chung Chang, Raghunath Putikam, Po-Han Chang, Amr Sabbah, Fang-Yu Fu, Wei-Fu Chen, Chih-I Wu, Tsyr-Yan Yu, Po-Wen Chung, M. C. Lin, Li-Chyong Chen () and Kuei-Hsien Chen ()
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Indrajit Shown: Institute of Atomic and Molecular Sciences, Academia Sinica
Satyanarayana Samireddi: Institute of Atomic and Molecular Sciences, Academia Sinica
Yu-Chung Chang: National Taiwan University
Raghunath Putikam: National Chiao Tung University
Po-Han Chang: National Taiwan University
Amr Sabbah: Institute of Atomic and Molecular Sciences, Academia Sinica
Fang-Yu Fu: National Taiwan University
Wei-Fu Chen: National Taiwan University
Chih-I Wu: National Taiwan University
Tsyr-Yan Yu: Institute of Atomic and Molecular Sciences, Academia Sinica
Po-Wen Chung: Institute of Chemistry, Academia Sinica
M. C. Lin: National Chiao Tung University
Li-Chyong Chen: National Taiwan University
Kuei-Hsien Chen: Institute of Atomic and Molecular Sciences, Academia Sinica

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract Photocatalytic formation of hydrocarbons using solar energy via artificial photosynthesis is a highly desirable renewable-energy source for replacing conventional fossil fuels. Using an l-cysteine-based hydrothermal process, here we synthesize a carbon-doped SnS2 (SnS2-C) metal dichalcogenide nanostructure, which exhibits a highly active and selective photocatalytic conversion of CO2 to hydrocarbons under visible-light. The interstitial carbon doping induced microstrain in the SnS2 lattice, resulting in different photophysical properties as compared with undoped SnS2. This SnS2-C photocatalyst significantly enhances the CO2 reduction activity under visible light, attaining a photochemical quantum efficiency of above 0.7%. The SnS2-C photocatalyst represents an important contribution towards high quantum efficiency artificial photosynthesis based on gas phase photocatalytic CO2 reduction under visible light, where the in situ carbon-doped SnS2 nanostructure improves the stability and the light harvesting and charge separation efficiency, and significantly enhances the photocatalytic activity.

Date: 2018
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DOI: 10.1038/s41467-017-02547-4

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