Enhanced photoelectrochemical hydrogen production using silicon nanowires@MoS3

High efficient silicon nanowires (SiNWs)@MoS3photocathode was fabricated by a convenient method. The SiNWs@MoS3 exhibit remarkably enhanced photoelectrochemical hydrogen production, in comparison with the pristine silicon nanowires. The hydrogen production capability of silicon nanowires@MoS3 is also comparable to that of SiNWs@Pt nanoparticles. The superior photoelectrochemical hydrogen production ability of SiNWs@MoS3 can be ascribed to small charge transfer resistance (i.e. faradic reaction kinetics) at SiNWs@MoS3/electrolyte interface and large photoelectrochemical active area of SiNWs@MoS3.