Doping La into the depletion layer of the Cd0.6Zn0.4S photocatalyst for efficient H2 evolution

Abstract

We report a novel strategy for the enhancement of photocatalytic H₂ evolution by doping La into the depletion layer of Cd_0.6Zn_0.4S (CZS: x% La). The apparent quantum yield of the CZS: 2% La photocatalyst at 350 nm is up to 93.3%, which is extremely high for solar water splitting even compared with the noble metal cocatalyst systems. This work may contribute to the design and construction of materials with outstanding capability for charge separation and hence improve the properties of the materials for various applications.