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Keywords:

  • gold;
  • photocatalysis;
  • supported catalysts;
  • titania;
  • water splitting
Thumbnail image of graphical abstract

Gold standard: Au/TiO2 catalysts, easily prepared in situ from different Au precursors and TiO2, generate hydrogen from water/alcohol mixtures. Different alcohols, and even glucose, can serve as sacrificial reductants. The best system produces hydrogen on a liter scale, and is stable for more than two days. Deuteration studies show that proton reduction is likely the rate-limiting step in this reaction.