Promoting CO electroreduction to CO by a graphdiyne-stabilized Au nanoparticle catalyst

• Published in: Dalton transactions : an international journal of inorganic chemistry Vol. 53; no. 1; pp. 245 - 25
• Main Authors: Shi, Guodong, Guo, De, Wang, Jun-Tao, Luo, Yanwei, Hou, Zhiwei, Fan, Zixiong, Wang, Mei, Yuan, Mingjian
• Format: Journal Article
• Published: 19.12.2023
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d3dt03432a

The electrochemical CO 2 reduction reaction (CO 2 RR) gives an ideal approach for producing valuable chemicals, offering dual benefits in terms of environmental preservation and carbon recycling. In this work, a strong synergistic effect is constructed by adopting electron-rich graphdiyne (GDY) as the supporting matrix, which significantly stabilizes the Au active sites and boosts the CO 2 RR process. The as-prepared GDY-supported Au nanoparticles (Au/GDY) exhibit excellent CO 2 RR performance, with an extremely high faradaic efficiency of 94.6% for CO as well as good stability with continuous electrolysis for 36 hours. The superior activity and stability of the Au/GDY catalyst can be attributed to the electronic interaction between Au nanoparticles and the GDY substrate, resulting in enhanced electron transfer rates and a stable network of catalytically active sites that ultimately promote the CO 2 RR. Stabilization of Au nanoparticles with graphdiyne enables efficient CO 2 electroreduction.