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Keywords:

  • hydrogen;
  • hydrogenation;
  • photocatalysts;
  • TiO2;
  • water splitting
Thumbnail image of graphical abstract

In black and white: The hydrogenation of TiO2 can extend its optical absorption into the visible and infrared region and change its color from white to black. Furthermore, the hydrogenated black TiO2 exhibits excellent photocatalytic activity for the splitting of water to yield H2.