Structure Dependent Product Selectivity for CO₂ Electroreduction on ZnO Derived Catalysts.

ABSTRACT: Electrochemical conversion of CO₂ is an attractive alternative to releasing it to the atmosphere. Catalysts derived from electroreduction of metal oxides are often more active than when starting with metallic phase catalyst. The origin of this effect is not yet clear. Using ZnO nanorods, we show that the initial structure of the oxide as well as the electrolyte medium have a profound impact on the structure of the catalytic active Zn phase, and thereby the selectivity of the catalysts. ZnO nanorods with various aspect ratios were electrochemically reduced in different electrolytes leading to metallic Zn with different structures; a sponge-like structure, nanorods and nanoplates. The sponge-like Zn produced syngas with H₂ : CO=2, and some formate, the nanorods produced

SUBMITTER: Han K 

PROVIDER: S-EPMC8248056 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature