Electroreduction of CO₂ Catalyzed by a Heterogenized Zn-Porphyrin Complex with a Redox-Innocent Metal Center.

ABSTRACT: Transition-metal-based molecular complexes are a class of catalyst materials for electrochemical CO₂ reduction to CO that can be rationally designed to deliver high catalytic performance. One common mechanistic feature of these electrocatalysts developed thus far is an electrogenerated reduced metal center associated with catalytic CO₂ reduction. Here we report a heterogenized zinc-porphyrin complex (zinc(II) 5,10,15,20-tetramesitylporphyrin) as an electrocatalyst that delivers a turnover frequency as high as 14.4 site^-1 s^-1 and a Faradaic efficiency as high as 95% for CO₂ electroreduction to CO at -1.7 V vs the standard hydrogen electrode in an organic/water mixed electrolyte. While the Zn center is critical to the observed catalysis,

SUBMITTER: Wu Y 

PROVIDER: S-EPMC5571454 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature