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- W4211027999 abstract "Abstract Nitrogen-doped graphene-supported single atoms convert CO 2 to CO, but fail to provide further hydrogenation to methane – a finding attributable to the weak adsorption of CO intermediates. To regulate the adsorption energy, here we investigate the metal-supported single atoms to enable CO 2 hydrogenation. We find a copper-supported iron-single-atom catalyst producing a high-rate methane. Density functional theory calculations and in-situ Raman spectroscopy show that the iron atoms attract surrounding intermediates and carry out hydrogenation to generate methane. The catalyst is realized by assembling iron phthalocyanine on the copper surface, followed by in-situ formation of single iron atoms during electrocatalysis, identified using operando X-ray absorption spectroscopy. The copper-supported iron-single-atom catalyst exhibits a CO 2 -to-methane Faradaic efficiency of 64% and a partial current density of 128 mA cm −2 , while the nitrogen-doped graphene-supported one produces only CO. The activity is 32 times higher than a pristine copper under the same conditions of electrolyte and bias." @default.
- W4211027999 created "2022-02-13" @default.
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- W4211027999 date "2022-02-10" @default.
- W4211027999 modified "2023-10-09" @default.
- W4211027999 title "A metal-supported single-atom catalytic site enables carbon dioxide hydrogenation" @default.
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- W4211027999 doi "https://doi.org/10.1038/s41467-022-28456-9" @default.
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