Electrochemical Fragmentation of Cu 2 O Nanoparticles Enhancing Selective C–C Coupling from CO 2 Reduction Reaction

In this study, we demonstrate that the initial morphology of nanoparticles can be transformed into small fragmented nanoparticles, which were densely contacted to each other, during electrochemical CO2 reduction reaction (CO2RR). Cu-based nanoparticles were directly grown on a carbon support by using cysteamine immobilization agent, and the synthesized nanoparticle catalyst showed increasing activity during initial CO2RR, doubling Faradaic efficiency of C2H4 production from 27% to 57.3%. The increased C2H4 production activity was related to the morphological transformation over reaction time. Twenty nm cubic Cu2O crystalline particles gradually experienced in situ electrochemical fragmentation into 2–4 nm…

• NR
  National Research Foundation
• FN
  Fonds National de la Recherche Luxembourg
• KI
  Korea Institute of Science and Technology
• NR
  National Research Foundation of Korea

  Award: 2017M1A2A2046713