| 초록 |
Recently, electrochemical reduction of carbon dioxide (CO2RR) has been spotlighted as a method to overcome the global warming problems. Also, valuable fuels or feedstock could be produced via CO2RR. Among the many catalysts for CO2RR, copper is the only metal which can produce hydrocarbon products. However, this reaction needs high overpotential and shows low product selectivity. In this research, we reveal electrocatalytic activities of partially oxidized copper nanoparticles which are capped by phosphonate ligand. The nanoparticles are characterized by SEM, HR-TEM, XRD, UV-Vis spectroscopy. In the initial stage of the electrochemical CO2 reduction process, ligands are removed and the structure is reconstructed. This rebuilt nanostructure shows high selectivity to C2+ products, about 50% of faradaic efficiency. |
