Issue 13, 2023

Graphdiyne/copper sulfide heterostructure for active conversion of CO2 to formic acid

Abstract

The synthesis of electrocatalysts with high selectivity, activity, and stability for the CO2 reduction reaction (CO2RR) is a promising and sustainable route to convert CO2 into value-added chemicals at room temperatures and pressures. Here we report a new heterostructured electrocatalyst of graphdiyne/copper sulfide (GDY/CuSx) via the controlled in situ growth of GDY on the surface of CuSx. Our results show that the introduction of GDY can effectively induce the formation of mixed-valence Cu(I, II) and incomplete charge transfer between the GDY and Cu atoms, which enhance the conductivity, produce new active sites, and finally result in a higher catalytic performance. In addition, the GDY grown on the surface of the catalysts endows the sample with a high long-term stability. Benefitting from above advantages, GDY/CuSx shows a high CO2-to-formate conversion performance with a high faradaic efficiency (FE) and long-term stability at room temperatures and ambient pressures.

Graphical abstract: Graphdiyne/copper sulfide heterostructure for active conversion of CO2 to formic acid

Supplementary files

Article information

Article type
Research Article
Submitted
09 mars 2023
Accepted
28 mars 2023
First published
29 mars 2023

Mater. Chem. Front., 2023,7, 2620-2627

Graphdiyne/copper sulfide heterostructure for active conversion of CO2 to formic acid

S. Cao, Y. Xue, X. Chen, C. Zhang, Y. Gao and Y. Li, Mater. Chem. Front., 2023, 7, 2620 DOI: 10.1039/D3QM00245D

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