| 초록 |
In this study, we report enhancement of faradaic efficiency of copper oxide (Cu2O) nanowire photocathodes with copper-incorporated crystalline TiO2 for photoelectrochemical CO2 reduction to methanol. Cu2O is promising p-type semiconductor for photocathode, but due to its self-corrosion the faradaic efficiency is low in CO2 reduction. We protect Cu2O surface from water by passivating crystalline TiO2. In addition, we also adopt Cu species on TiO2 surface to increase surface reactivity so that faradaic efficiency was enhanced to 44% from 26%. |
