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

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 mu mol.g(catalyst)(-1) H-2 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. (C) 2017 Elsevier Inc. All rights reserved.