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Keywords:

  • hydrogen generation;
  • inverse opals;
  • photoelectrochemical cells;
  • photonic crystals;
  • quantum dots
Thumbnail image of graphical abstract

A new nanoarchitecture photoelectrode design comprising CdS quantum-dot-sensitized, optically and electrically active TiO2 inverse opals is developed for photoelectrochemical water splitting. The photoelectrochemical performance shows high photocurrent density (4.84 mA cm−2 at 0 V vs. Ag/AgCl) under simulated solar-light illumination.