| Abstract: | One-dimensional(1 D) transition metal phosphides(TMPs) with large specific surface areas,high charge transfer efficiency and excellent electrical conductivity have attracted significant attention in hydrogen evolution reaction(HER) as versatile and active catalysts.Herein,the sub-4 nm Mo-Co_2 P ultrafine nanorods(NRs) anchored on reduced graphene oxide(rGO) were successfully synthesized by a colloidal mesostructured strategy.Electrochemical test results reveal that the Mo-Co_2 P@rGO electrode exhibits superior activity with overpotentials of204 mV and Tafel slope of 88 mV/dec for HER at 10 mA/cm~2,relative to the Co_2 P@rGO electrode in 0.5 M H_2 SO_4 solution.This improvement could be ascribed to the Mo doping,which results in more active sites,higher electrical conductivity and faster electron-transfer rates.This versatile strategy will provide a promising pathway for transition metal-doped compounds as an efficient catalyst. |
