biostudies-literature00550Unknown12(1)Seo DBA controllable approach that combines surface plasmon resonance and two-dimensional (2D) graphene/MoS₂ heterojunction has not been implemented despite its potential for efficient photoelectrochemical (PEC) water splitting. In this study, plasmonic Ag-decorated 2D MoS₂ nanosheets were vertically grown on graphene substrates in a practical large-scale manner through metalorganic chemical vapor deposition of MoS₂ and thermal evaporation of Ag. The plasmonic Ag-decorated MoS₂ nanosheets on graphene yielded up to 10 times higher photo-to-dark current ratio than MoS₂ nanosheets on indium tin oxide. The significantly enhanced PEC activity could be attributed to the synergetic effects of SPR and favorable graphene/2D MoS₂ heterojunction. Plasmonic Ag nanoparticles not only increased visible-light and near-infrared absorption of 2D MoS₂, but also induced highly amplified local electric field intensity in 2D MoS₂. In addition, the vertically aligned 2D MoS₂ on graphene acted as a desirable heterostructure for efficient separation and transportation of photo-generated carriers. This study provides a promising path for exploiting the full potential of 2D MoS₂ for practical large-scale and efficient PEC water-splitting applications.Nano-micro letters172https://www.ebi.ac.uk/biostudies/studies/S-EPMC7770824biostudies-literaturePlasmonic Ag-Decorated Few-Layer MoS₂ Nanosheets Vertically Grown on Graphene for Efficient Photoelectrochemical Water Splitting.PMC7770824Sohn YSeo DBKim ETTrung TNDuc DVJeong JRKim DOHong S55falsePlasmonic Ag-Decorated Few-Layer MoS₂ Nanosheets Vertically Grown on Graphene for Efficient Photoelectrochemical Water Splitting.A controllable approach that combines surface plasmon resonance and two-dimensional (2D) graphene/MoS₂ heterojunction has not been implemented despite its potential for efficient photoelectrochemical (PEC) water splitting. In this study, plasmonic Ag-decorated 2D MoS₂ nanosheets were vertically grown on graphene substrates in a practical large-scale manner through metalorganic chemical vapor deposition of MoS₂ and thermal evaporation of Ag. The plasmonic Ag-decorated MoS₂ nanosheets on graphene yielded up to 10 times higher photo-to-dark current ratio than MoS₂ nanosheets on indium tin oxide. The significantly enhanced PEC activity could be attributed to the synergetic effects of SPR and favorable graphene/2D MoS₂ heterojunction. Plasmonic Ag nanoparticles not only increased visible-light and near-infrared absorption of 2D MoS₂, but also induced highly amplified local electric field intensity in 2D MoS₂. In addition, the vertically aligned 2D MoS₂ on graphene acted as a desirable heterostructure for efficient separation and transportation of photo-generated carriers. This study provides a promising path for exploiting the full potential of 2D MoS₂ for practical large-scale and efficient PEC water-splitting applications.2020-01-01T00:00:00Z2020 Aug2024-11-15T10:59:08.168Z2022-02-10T15:48:14.832ZS-EPMC77708243413815310.1007/s40820-020-00512-3