4. Conclusion
Summarily, hierarchical
CoP/ZnCdS/Co3O4QDs bi-heterostructure cages was constructed by integrating about 800 nm
CoP polyhedron, 40 nm ZnCdS nanoparticles and 4.5 nm
Co3O4 QDs into all-in-one as an
ultrahigh-performance photocatalyst for visible-light-driven water
splitting. What’s more, the development of the two parallel
electron-transfer pathways in the bi-heterostructured
CoP/ZnCdS/Co3O4 QDs cages makes
photo-excited charges in ZnCdS be used seriously to the hydrogen
evolution reaction. Undoubtedly, both semi-metallic CoP and
three-dimensionally confined Co3O4 QDs
as electron traps efficiently separated and transferred charges in
photocatalytic water-splitting reaction. Besides, the
CoP/ZnCdS/Co3O4 QDs photocatalyst not
only exhibited high-efficiency H2-evolution but also
favorable recycling stability.