Graphene Quantum Dot-Mediated Atom-Layer Semiconductor Electrocatalyst for Hydrogen Evolution.

ABSTRACT: The hydrogen evolution reaction performance of semiconducting 2H-phase molybdenum disulfide (2H-MoS₂) presents a significant hurdle in realizing its full potential applications. Here, we utilize theoretical calculations to predict possible functionalized graphene quantum dots (GQDs), which can enhance HER activity of bulk MoS₂. Subsequently, we design a functionalized GQD-induced in-situ bottom-up strategy to fabricate near atom-layer 2H-MoS₂ nanosheets mediated with GQDs (ALQD) by modulating the concentration of electron withdrawing/donating functional groups. Experimental results reveal that the introduction of a series of functionalized GQDs during the synthesis of ALQD plays a crucial role. Notably, the higher the concentration and strength of electron-

SUBMITTER: Hu B 

PROVIDER: S-EPMC10539274 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature