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, Ming-Chang Lin, Li Chyong Chen*, Kuei Hsien Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

129 Scopus citations

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.

Original languageEnglish
Article number169
JournalNature Communications
Volume9
Issue number1
DOIs
StatePublished - 1 Dec 2018

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