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Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light
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Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light
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Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light
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Journal Article
Carbon-doped SnS2 nanostructure as a high-efficiency solar fuel catalyst under visible light
2018
Overview
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 SnS
2
(SnS
2
-C) metal dichalcogenide nanostructure, which exhibits a highly active and selective photocatalytic conversion of CO
2
to hydrocarbons under visible-light. The interstitial carbon doping induced microstrain in the SnS
2
lattice, resulting in different photophysical properties as compared with undoped SnS
2
. This SnS
2
-C photocatalyst significantly enhances the CO
2
reduction activity under visible light, attaining a photochemical quantum efficiency of above 0.7%. The SnS
2
-C photocatalyst represents an important contribution towards high quantum efficiency artificial photosynthesis based on gas phase photocatalytic CO
2
reduction under visible light, where the in situ carbon-doped SnS
2
nanostructure improves the stability and the light harvesting and charge separation efficiency, and significantly enhances the photocatalytic activity.
Photocatalytic reduction of CO
2
to hydrocarbons is a promising route to both CO
2
utilization and renewable fuel production. Here the authors identify that carbon-doped SnS
2
possesses a high catalytic efficiency towards CO
2
reduction owing to low photogenerated charge recombination rates.
