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Keywords:

  • electrochemistry;
  • monolayers;
  • photosynthesis;
  • water splitting
Thumbnail image of graphical abstract

Manipulation at the atomic level: Freestanding SnS2 single-layers with three atom thickness were synthesized through an exfoliation strategy (see picture). The SnS2 single-layers have an increased density of states at the valence band edge. A photoelectrode made from this material shows a visible-light conversion efficiency of 38.7 % that is superior to most existing reports.