▎ 摘　　要

The process of carbon dioxide (CO2) reduction by using efficient non-precious-metal catalyst to make the process be economical has brought a comprehensive research in the area. In this study, graphene layer in copper foil was easily synthesized using hydrothermal method at temperature 200 degrees C in 3 h duration. Diffraction peaks in XRD at around 29 degrees, 36 degrees,42 degrees and 74 degrees in the composites correlate to the (110), ( 111), (200) and (311) crystalline planes of cubic cuprous oxide (Cu2O), while peak at 27 degrees showed the carbon graphitic peak. Raman confirms the presence of the graphene layer on Cu2O. Photoelectrochemical performance test of Graphene/Cu2O demonstrated that the photoelectrocatalyst showing the photocurrent density 9.6 mA cm(-2) at -0.8V vs Ag/AgCl. This study demonstrated a potential of semiconductor-based hybrid electrode for an efficient photoelectrocatalytic of CO2 reduction.