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Keywords:

  • electrochemistry;
  • hydrogen production;
  • photochemistry;
  • surface chemistry;
  • water splitting
Thumbnail image of graphical abstract

Surface exfoliation: A Ta3N5 photoanode prepared by a thermal oxidation and nitridation method shows a high solar photocurrent. This photocurrent is currently the highest achieved by a Ta3N5 photoanode. The photocurrent is obtained mainly because of facile thermal and mechanical exfoliation of the surface passivation layer of the Ta3N5 photoanode (see picture).