a

In this research, the surface of Cu2O film was modified cuprous oxide nanostructure. The Cu2O film was manufactured by thermal oxide method and the Cu2O nanorod was fabricated by anodize of Cu polished foil in exposure to alkaline electrolyte. The nanorod with length of 150 nm should be heated to produce the pure Cu2O crystalline phase. The optimized heat treatment was 700ᵒC for 15 min under Ar gas flow. The XRD analysis shows no pick related to other copper oxide phase. The film/Nanorod NR was prepared through the spin-coating of nanostructure on the film and then followed by final heating process. The photoelectrochemical analysis shows an improvement of about 76 of current density in -0.6V Vs. Ag/AgCl. For more study, Electrochemical Impedance Spectroscopy EIS and Mott-Schottky analysis were investigated.