二硫化钼/多孔氮化碳复合材料的制备及其结构表征OA

With the burgeoning development of the hydrogen energy industry,research endeavors focused on electrochemical hydrogen evolution catalysts have intensified significantly.Molybdenum disulfide(MoS2)has garnered substantial attention owing to its remarkable electrocatalytic activity toward the hydrogen evolution reaction(HER)and inherent cost-effectiveness.In this study,a heterojunction engineering strategy was adopted to further optimize its catalytic performance.Specifically,MoS2 was hybridized with varying quantities of porous graphitic carbon nitride(pg-C3N4)to modulate the electronic structure of MoS2,thereby enhancing its HER kinetics and determining the optimal loading mass of pg-C3N4.Experimental results reveal that the composite incorporating 40 mg of pg-C3N4 exhibits superior electrical conductivity.Furthermore,chronopotentiometry tests conducted over 2 hours duration demonstrated that the hydrogen yield of the composite exceeded that of pristine MoS2 by more than 10％.Collectively,these findings offer novel insights into the rational design of low-cost electrocatalysts for hydrogen production.