The ZnIn2S4/CdS hollow core-shell nanoheterostructure towards enhanced visible light photocatalytic H2 evolution via bimetallic synergism. (8th February 2023) - Que, Lixin
Abstract: The ZnIn2 S4 /CdS hollow core-shell nanoheterostructure with bimetallic synergism is synthesized via a hybrid chemical method. As revealed, the ZnIn2 S4 /CdS hollow core-shell nanoheterostructure (ZnIn2 S4 /CdS-3) exhibits remarkable visible light photocatalytic hydrogen evolution (∼5209.43 μmol·g −1 ·h −1, AQE of ∼20.26%) than that of single CdS (∼40 folds) and single ZnIn2 S4 (∼12 folds), and achieves decent photocatalytic stability (average HER performance of ∼5056.80 μmol·g −1 ·h −1 ), which is mainly ascribed to that, the formed ZnIn2 S4 /CdS heterostructure with appropriate potential gradient and Zn/In bimetallic synergism can improve carrier transportation, including increasing carrier transportation, prolonging lifetime and decreasing recombination, the hollow core-shell nanostructure can provide abundant active sites and increase solar efficiency, while can maintain a photocatalytic stability. Graphical abstract: Image 1 Highlights: Heterostructure can promote carriers separation/transport via appropriate potential. Zn/In bimetallic sulfides synergy can improve charge carriers efficiency. Hollow core-shell structure can increase active site and solar efficiency.