Coordination environment dependent selectivity of single-site-Cu enriched crystalline porous catalysts in CO₂ reduction to CH₄.

ABSTRACT: The electrochemical CO₂ reduction to high-value-added chemicals is one of the most promising and challenging research in the energy conversion field. An efficient ECR catalyst based on a Cu-based conductive metal-organic framework (Cu-DBC) is dedicated to producing CH₄ with superior activity and selectivity, showing a Faradaic efficiency of CH₄ as high as ~80% and a large current density of -203 mA cm^-2 at -0.9 V vs. RHE. The further investigation based on theoretical calculations and experimental results indicates the Cu-DBC with oxygen-coordinated Cu sites exhibits higher selectivity and activity over the other two crystalline ECR catalysts with nitrogen-coordinated Cu sites due to the lower energy barriers of Cu-O₄ sites during ECR

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC8568903 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature