Size Effect of Graphene Oxide on Graphene-Aerogel-Supported Au Catalysts for Electrochemical CO₂ Reduction.

ABSTRACT: The lateral size of graphene nanosheets plays a critical role in the properties and microstructure of 3D graphene as well as their application as supports of electrocatalysts for CO₂ reduction reactions (CRRs). Here, graphene oxide (GO) nanosheets with different lateral sizes (1.5, 5, and 14 µm) were utilized as building blocks for 3D graphene aerogel (GA) to research the size effects of GO on the CRR performances of 3D Au/GA catalysts. It was found that GO-L (14 µm) led to the formation of GA with large pores and a low surface area and that GO-S (1.5 µm) induced the formation of GA with a thicker wall and isolated pores, which were not conducive to the mass transfer of CO₂ or its interaction with catalysts. Au/GA constructed with a suitable-sized GO (5 µm) exhibited

SUBMITTER: Shen S 

PROVIDER: S-EPMC10650518 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature