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Oxide-Derived Copper Nanowire Bundles for Efficient COsub.2 Reduction to Multi-Carbon Products
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Oxide-Derived Copper Nanowire Bundles for Efficient COsub.2 Reduction to Multi-Carbon Products
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Journal Article
Oxide-Derived Copper Nanowire Bundles for Efficient COsub.2 Reduction to Multi-Carbon Products
2023
Overview
Cu-based catalysts for efficient C[sub.2+] production from CO[sub.2] electrocatalytic reduction reaction (CO[sub.2]ERR) exhibit significant promise, but still suffer from ambiguous mechanisms due to the intrinsic structure instability during electroreduction. Herein, we report an oxide-derived copper nanowire bundle (OD-Cu NWB) for efficient CO[sub.2]ERR to C[sub.2+] products. OD-Cu NWBs with a well-preserved nanowire bundle morphology lead to promoted multi-carbon production compared to commercial copper powders. The formation of OD-Cu NWBs shows a great dependence on the precipitation/calcination temperatures and per-reduction potentials, which further influence the ultimate CO[sub.2]ERR performance correspondingly. The optimized preparation parameters for the formation of a well-ordered nanowire bundle morphology are found, leading to a preferred C[sub.2+] production ability. Besides the nanowire bundle morphology, the oxide-derived Cu essence of OD-Cu NWBs with stabilized Cu[sup.+] species from per-reduction also promotes the CO[sub.2]ERR activity and facilitates the C-C coupling of key intermediates for C[sub.2+] production. This work provides a facile strategy and inspiration for CO[sub.2]ERR catalyst developments targeting high-valued multi-carbon products.
Publisher
MDPI AG
Subject
