Water splitting by CdS/Pt/WO3-CeOx photocatalysts with assisting of artificial blood perfluorodecalin

- Suppresses CdS photocorrosion by enhancing charge relay and transfer via Pt layer.
- Removal of nascent O2 from catalyst via CeO2 and artificial blood PFDL.
- Inhibition H2 and O2 recombination was achieved by PFDL.
- Generation of 186.2 μmol·g−1catalyst H2 in 4 h was achieved with help of PFDL.
- Excellent stability in 24 h was fulfilled without obvious decay

Photocatalytic hydrogen production from water splitting is an attractive scientific and technological route to address the increasing global demand for clean energy and to reduce the climate change impact of CO2 emission. Although tremendous efforts have been made, hydrogen generation from pure water by an efficient semiconductor catalyst driven by visible light still remains a significant challenge. Herein we present an effective photocatalyst based on Ce-doped WO3 and CdS powders embedded into platinum (Pt) layer. With the help of artificial blood component perfluorodecalin (PFDL), our system achieved 186.2 μmol·g−1catalyst H2 in 4 h without sacrifice reagent under visible light irradiation and maintained excellent stability in 24 h without obvious decay. The hydrogen evolution activity and excellent stability are assigned to the enhancement of the electrons and holes relay and transfer by Pt layer, and the removal of nascent oxygen from catalyst via CeO2 and artificial blood PFDL path, and the suppression of undesirable hydrogen and oxygen recombination reverse reaction.

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