| 초록 |
We demonstrate a highly selective and efficient 3-dimensional Au nanoarchitecture electrocatalysts through solvent- assisted nanotransfer printing process (s-nTP). Based on the engineering of grain boundary density and crystalline plane of Au nanowires constituting Au nanoarchitectures, high faradaic efficiency and current density were achieved. Furthermore, diffusional gradients induced by 3-dimensional Au nanoarchitectures further suppressed hydrogen evolution reaction while preserving high rates of CO2 reduction to CO, thus high CO faradaic efficiency at low overpotential was achieved. As a results, it exhibited CO faradaic efficiency of 94% at 390 mV of overpotential with a current density of 1.32 mA/cm2. |
