Highly selective electrocatalytic reduction of CO to HCOOH over an in situ derived hydrocerussite thin film on a Pb substrate.

A metal oxide electrode has been developed for the electrochemical CO reduction reaction (eCORR). It exhibits superior activity and product selectivity towards eCORR by circumventing the previously encountered problem of self-reduction with high-valence metals. Specifically, a hydrocerussite [Pb(CO)(OH)] thin film has been synthesized in situ on a Pb substrate (denoted as ER-HC) by an electroreduction method using a lead-based metal-organic framework (Pb-MOF) as a precursor.

Facile treatment tuning the morphology of Pb with state-of-the-art selectivity in CO electroreduction to formate.

This study presents a facile treatment to modify the commercial irregular shaped polycrystalline Pb into well-defined octahedral Pb with unique Pb(111) facets. Efficient, selective, and stable electrochemical reduction of CO2 toward formate has been achieved on the treated Pb electrode. The faradaic efficiency of formate production from the CO2RR is 98.

HKUST-1-derived highly ordered Cu nanosheets with enriched edge sites, stepped (211) surfaces and (200) facets for effective electrochemical CO reduction.

A novel electrode composed of Cu nanosheets constructed from nanoparticles was synthesized by in situ electrochemical derivation from the metal-organic framework (MOF) HKUST-1. The prepared derivative electrode (HE-Cu) exhibited higher Faradaic efficiency (FE, 56.0%) of electrochemical CO reduction (COR) compared with that of pristine Cu foil (p-Cu, 32.