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Keywords:

  • photocatalysis;
  • hydrogen;
  • ZnO–CdS@Cd;
  • heterostructures
Thumbnail image of graphical abstract

A novel heterostructure consists of a metal Cd core and a ZnO–CdS heterostructural shell, where ZnO nanoparticles are embedded in a CdS shell. Photocatalytic hydrogen evolution is greatly improved due to the metal Cd core, which provides a charge-carrier transport channel for enhancing the recombination of photoexcited electrons from ZnO and holes from CdS based on Z-scheme co-operation.