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Title: Reconstructing two-dimensional defects in CuO nanowires for efficient CO 2 electroreduction to ethylene
Here we report that in situ reconstructed Cu two-dimensional (2D) defects in CuO nanowires during CO 2 RR lead to significantly enhanced activity and selectivity of C 2 H 4 compared to the CuO nanoplatelets. Specifically, the CuO nanowires achieve high faradaic efficiency of 62% for C 2 H 4 and a partial current density of 324 mA cm −2 yet at a low potential of −0.56 V versus a reversible hydrogen electrode. Structural evolution characterization and in situ Raman spectra reveal that the high yield of C 2 H 4 on CuO nanowires is attributed to the in situ reduction of CuO to Cu followed by structural reconstruction to form 2D defects, e.g. , stacking faults and twin boundaries, which improve the CO production rate and *CO adsorption strength. This finding may provide a paradigm for the rational design of nanostructured catalysts for efficient CO 2 electroreduction to C 2 H 4 .  more » « less
Award ID(s):
2033343
PAR ID:
10286532
Author(s) / Creator(s):
; ; ; ; ; ;
Date Published:
Journal Name:
Chemical Communications
ISSN:
1359-7345
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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