Facile electron delivery from graphene template to ultrathin metal-organic layers for boosting CO₂ photoreduction.

ABSTRACT: Metal-organic layers with ordered structure and molecular tunability are of great potential as heterogeneous catalysts due to their readily accessible active sites. Herein, we demonstrate a facile template strategy to prepare metal-organic layers with a uniform thickness of three metal coordination layers (ca. 1.5?nm) with graphene oxide as both template and electron mediator. The resulting hybrid catalyst exhibits an excellent performance for CO₂ photoreduction with a total CO yield of 3133?mmol?g^-1_MOL (CO selectivity of 95%), ca. 34 times higher than that of bulky Co-based metal-organic framework. Systematic studies reveal that well-exposed active sites in metal-organic layers, and facile electron transfer between heterogeneous and homogeneous components mediated by graphene oxide, greatly contribute to its high activity. This work highlights a facile way for constructing ultrathin metal-organic layers and demonstrates charge transfer pathway between conductive template and catalyst for boosting photocatalysis.

SUBMITTER: Wang JW 

PROVIDER: S-EPMC7864970 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature