Hexagonal prism-shaped CuO/SnO2 heterostructure for high-performance CO2ER to formate

Abstract

A hexagonal prism-shaped CuO/SnO2 heterostructured catalyst with electron-enriched SnO2 active sites was designed and synthesized. The formation of the CuO/SnO2 heterointerface and electron-enriched SnO2 active sites significantly enhanced the catalytic activity and selectivity for HCOO in electrochemical reduction of carbon dioxide (CO2ER), while the well-defined hexagonal prismatic architecture provided catalytic and morphological stability. Consequently, the catalyst delivered a jHCOO surpassing that of pure SnO2 by 5 mA cm−2 at −1.2 V vs. RHE and achieved FEHCOO up to 97% at −0.9 V vs. RHE, retaining FEHCOO above 80% with negligible current density decay after 36 hours of durability testing.

Graphical abstract: Hexagonal prism-shaped CuO/SnO2 heterostructure for high-performance CO2ER to formate

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Article information

Article type
Communication
Submitted
26 May 2025
Accepted
25 Aug 2025
First published
29 Aug 2025

Chem. Commun., 2025, Advance Article

Hexagonal prism-shaped CuO/SnO2 heterostructure for high-performance CO2ER to formate

X. Hu, J. Zhang, Y. Du, Z. Yan, X. Liu and Z. Wei, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC02980E

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