摘要
A novel three-dimensional (3D) layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots (MoS2@N-GQDs-GR) composites as an enhanced electrochemical hydrogen evolution catalyst. The few layered MoS2 nanoflowers supported on N-GQDs-GR surface were elaborately fabricated by one-pot hydrothermal method, which MoS2 and N-GQDs-GR exist in a bonding manner of Mo-N. In addition, due to the layered MoS2 sheet edge exposes more hydrogen evolution active sites and N-GQDs-GR have high conductivity, the composites exhibit prominent electrocatalytic activity with a low overpotential 99 mV, a small Tafel slope 49.3 mV/dec. Therefore, that the current work will develop HER catalysts may replace Pt.
A novel three-dimensional（3D）layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots（MoS2@N-GQDs-GR）composites as an enhanced electrochemical hydrogen evolution catalyst.The few layered MoS2 nano flowers supported on N-GQDs-GR surface were elaborately fabricated by one-pot hydrothermal method,which MoS2 and N-GQDs-GR exist in a bonding manner of Mo-N.In addition,due to the layered MoS2 sheet edge exposes more hydrogen evolution active sites and N-GQD s-GR have high conductivity,the composites exhibit prominent electrocatalytic activity with a low ove rpotential 99 mV,a small Tafel slope 49.3 mV/dec.Therefore,that the curre nt work will develop HER catalysts may replace Pt.
基金
financially supported by the National Natural Science Foundation of China(Nos. 21165016, 21175108, 21265018)
the Science and Technology Support Projects of Gansu Province (Nos. 1011GKCA025, 090GKCA036,1208RJZM289)
