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Keywords:

  • gold;
  • titanium dioxide;
  • Janus nanostructures;
  • surface-plasmon resonance;
  • photocatalysis
Thumbnail image of graphical abstract

The first use of non-centrosymmetric Janus Au-TiO2 photocatalysts in efficient, plasmon-enhanced visible-light hydrogen generation is demonstrated. The intense localization of plasmonic near-fields close to the Au-TiO2 interface, coupled with optical transitions involving localized electronic states in amorphous TiO2 brings about enhanced optical absorption and the generation of electron-hole pairs for photocatalysis.