Abstract
Solar-driven water splitting by photoelectrochemical method is a prospective approach for clean energy hydrogen production. Reduced graphene oxide (RGO) and Ag nanoparticles are deposited on α-Fe2O3 nanorod arrays by hydrothermal and photodeposition methods forming α-Fe2O3/RGO/Ag photoelectrode. An optimum photocurrent density is obtained at 0.72 mA/cm2 with 0.23 V (1.23 V vs RHE), together with the maximum photoconversion efficiency of 0.15%, much higher than pure α-Fe2O3 of 0.07%. The enhanced photoelectrochemical properties could be resulted from its broadened light absorption, decreased electro-hole recombination rate and improved charge carriers transport. This work provides potential applications in fields of the photocatalyst and photo-water splitting.
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