Tunable CO/H2 ratios of electrochemical reduction of CO2 through the Zn-Ln dual atomic catalysts
Dual-metal atomic catalysts produce flexible ratios of syngas products. Electrochemical reduction of CO 2 (CO 2 RR) to value-added liquid fuels is a highly appealing solution for carbon-neutral recycling, especially to syngas (CO/H 2 ). Current strategies suffer from poor faradaic efficiency (FE), s...
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Veröffentlicht in: | Science advances 2021-11, Vol.7 (47), p.eabl4915-eabl4915 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Dual-metal atomic catalysts produce flexible ratios of syngas products.
Electrochemical reduction of CO
2
(CO
2
RR) to value-added liquid fuels is a highly appealing solution for carbon-neutral recycling, especially to syngas (CO/H
2
). Current strategies suffer from poor faradaic efficiency (FE), selectivity, and controllability to the ratio of products. In this work, we have synthesized a series of single and dual atomic catalysts on the carbon nitride nanosheets. Adjusting the ratio of La and Zn atomic sites produces syngas with a wide range of CO/H
2
ratios. Moreover, the ZnLa-1/CN electrocatalyst generates the syngas with a ratio of CO/H
2
= 0.5 at a wide potential range, and the total FE of CO2RR reaches 80% with good stability. Density functional theory calculations have confirmed that the Zn and La affect electronic structures and determine the formation of CO and H
2
, respectively. This work indicates a promising strategy in the development of atomic catalysts for more controllable CO
2
RR. |
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ISSN: | 2375-2548 |
DOI: | 10.1126/sciadv.abl4915 |