Rod-like Mn0.2Cd0.8S wrapped in foliated CeO2 promote efficient photocatalytic hydrogen evolution

The Mn 0.2 Cd 0.8 S/CeO 2 heterojunction is synthesized by means of hydrothermal coupling. Short rod-like Mn 0.2 Cd 0.8 S is wrapped in leaf like CeO 2 to construct a tight heterointerface, which stimulated the photocatalytic activity to the great extent. Due to the remarkable catalytic and electrochemical properties of Mn 0.2 Cd 0.8 S, the CeO 2 surface active site is driven. CeO 2 has excellent specific surface area, suitable pore volume aperture and Mn 0.2 Cd 0.8 S match to optimize the internal interface charge transfer path. At the same time, the heterointerface can coordinate the interface electron flow and promote the H 2 reduction ability. The results show that the optimal hydrogen production of Mn 0.2 Cd 0.8 S/CeO 2 with S-type heterostructure is 291.8 μmol, and the internal lattice and surface morphology of Mn 0.2 Cd 0.8 S/CeO 2 are not easily damaged due to good catalytic stability. The photocatalytic mechanism of Mn 0.2 Cd 0.8 S/CeO 2 is studied by finding the short distance interfacial charge transfer path and enriching the photogenerated electrons required for hydrogen evolution.