In:
Angewandte Chemie, Wiley, Vol. 132, No. 22 ( 2020-05-25), p. 8784-8790
Abstract:
A considerable challenge in the conversion of carbon dioxide into useful fuels comes from the activation of CO 2 to CO 2 .− or other intermediates, which often requires precious‐metal catalysts, high overpotentials, and/or electrolyte additives (e.g., ionic liquids). We report a microwave heating strategy for synthesizing a transition‐metal chalcogenide nanostructure that efficiently catalyzes CO 2 electroreduction to carbon monoxide (CO). We found that the cadmium sulfide (CdS) nanoneedle arrays exhibit an unprecedented current density of 212 mA cm −2 with 95.5±4.0 % CO Faraday efficiency at −1.2 V versus a reversible hydrogen electrode (RHE; without i R correction). Experimental and computational studies show that the high‐curvature CdS nanostructured catalyst has a pronounced proximity effect which gives rise to large electric field enhancement, which can concentrate alkali‐metal cations resulting in the enhanced CO 2 electroreduction efficiency.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v132.22
DOI:
10.1002/ange.201912348
Language:
English
Publisher:
Wiley
Publication Date:
2020
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