Designing of WO@CoO Heterostructures to Enhance Photoelectrochemical Performances.

Heterostructured photocatalysts are superior to single photocatalysts because they offer better charge separation and broaden light harnessing abilities. Although WO is considered an oxygen-evolving photocatalyst with decent stability and proper band gap, its lower photocatalytic efficiency is ascribed to high charge recombination. In this research, a WO@CoO heterostructure reduced the recombination of photocatalytic charges and extended light absorption abilities, resulting in improved photocatalytic activity.

Designing CdS-Based Ternary Heterostructures Consisting of Co-Metal and CoO Cocatalysts for Photocatalytic H Evolution under Visible Light.

Heterostructure formation is an effective method used for designing photocatalysts that solve problems caused by photoexcited charge recombination phenomena associated with the photocatalytic water redox reaction. This work reports a new Co-metal-incorporated ternary heterostructured photocatalyst, CdS/CoO/Co-metal, which enhanced charge separation to increase photocatalytic H evolution 30.5-fold in comparison to pure CdS under visible light.