S-Scheme CdS/CuWO 4 Heterojunction Optimizes Reaction Kinetics for Enhanced Photocatalytic H 2 Evolution

In the field of photocatalytic water splitting for hydrogen (H2) production, heterojunction engineering is regarded as one of the effective strategies to enhance the separation efficiency of photogenerated charge carriers and the redox capability. In this work, a simple electrostatic self-assembly method was employed to intimately couple CuWO4 nanoparticles with CdS nanorods, thereby constructing a CdS/CuWO4 heterojunction for photocatalytic H2 evolution from water. In situ XPS and surface photovoltage measurements confirm the presence of a strong built-in electric field (IEF) and an S-scheme charge transfer pathway at the CdS/CuWO4 heterojunction interface. Meanwhile, the IEF strength in the CdS/CuWO4…

• NS
  Natural Science Foundation of Henan Province

  Award: 252300423125