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Vacancy-defect modulated pathway of photoreduction of CO2 on single atomically thin AgInP2S6 sheets into olefiant gas
Open accessAbstract
Artificial photosynthesis, light-driving CO 2 conversion into hydrocarbon fuels, is a promising strategy to synchronously overcome global warming and energy-supply issues. The quaternary AgInP 2 S 6 atomic layer with the thickness of ~ 0.70 nm were successfully synthesized through facile ultrasonic exfoliation of the corresponding bulk crystal. The sulfur defect engineering on this atomic layer through a H 2 O 2 etching treatment can excitingly change the CO 2 photoreduction reaction pathway to steer dominant generation of ethene with the yield-based selectivity reaching ~73% and the electron-based selectivity as high as ~89%. Both DFT calculation and in-situ FTIR spectra demonstrate that as the introduction of S vacancies in AgInP 2 S 6 causes the charge accumulation on the Ag atoms near the S vacancies, the exposed Ag sites can thus effectively capture the forming *CO molecules. It makes the catalyst surface enrich with key reaction intermediates to lower the C-C binding coupling barrier, which facilitates the production of ethene.
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Metadata
- Authors
- Gao, W., Li, S., He, H., Li, X., Cheng, Z., Yang, Y., Wang, J., Shen, Q., Wang, X., Xiong, Y., Zhou, Y., & Zou, Z.
- Venue
- Nature Communications
- Published
- 2021-08-06
- Volume
- 12
- Issue
- 1
- Pages
- 4747-4747
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W3190450040
- Cited by
- 319
- References
- 27
- FWCI
- 9.19
- Type
- journal article
- Language
- en
- Open access
- gold
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- Gao, W., Li, S., He, H., Li, X., Cheng, Z., Yang, Y., Wang, J., Shen, Q., Wang, X., Xiong, Y., Zhou, Y., & Zou, Z. (2021). Vacancy-defect modulated pathway of photoreduction of CO2 on single atomically thin AgInP2S6 sheets into olefiant gas. Nature Communications. https://doi.org/10.1038/s41467-021-25068-7
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