Quantum Dots Mediated Heterojunction Coupling MoSe₂ Photoanode for Photoelectrochemical Water Splitting.

ABSTRACT: Graphene quantum dots (GQDs) possess the photosensitive absorption for photoelectrochemical hydrogen evolution owing to special band structures, whereas they usually confront with photo-corrosion or undesired charge recombination during photoelectrochemical reactions. Hence, we establish the heterojunction between GQDs and MoSe₂ sheets via a hydrothermal process for improved stability and performance. Photoanodic water splitting with hydrogen evolution boosted by the heteroatom doped N,S-GQDs/MoSe₂ heterojunction has been attained due to the abundant active sites, promoted charge separation and transfer kinetics with reduced energy barriers. Diphasic 1T and 2H MoSe₂ sheet-hybridized quantum dots contribute to the Schottky heterojunction, which can play a ke

SUBMITTER: Zhang L 

PROVIDER: S-EPMC10935356 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature