Electron Regulation in Pt-M (M = Cu, Co, and Ni) Decorated WO3 Thin Films for Photocatalytic Degradation Performance

In this study, Pt-M/WO3 (M = Cu, Co, and Ni) thin films are effectively synthesized by preparing homogeneous precursor sols, spin-coating, toluene-etching, calcination. Furthermore, the microstructural, chemical, electrochemical properties of WO3, Pt-Cu/WO3, Pt-Co/WO3, Pt-Ni/WO3 also systematically compared. The results demonstrate that when compared to WO3 film, photocatalytic capability for methylene blue (MB) solution degradation is greatly increased in films. Transfer routes photogenerated charges an improved process suggested based on experimental results. Due large difference work function (Φ) between bimetallic alloy Pt-M a bending energy bands at interface presented. introduction transition metals such as or Ni modifies electronic structure films, facilitating separation migration electrons holes. Specifically, migrate from CB Pt-Co Pt-Ni nanoparticles samples Pt-Co/WO3 while hot localized surface plasmon resonance (LSPR) effect Cu could transfer conduction band (CB) other generated photoexcitation semiconductor itself sample Pt-Cu/WO3 film. summary, proposes unique strategy creating electron regulation decorated application.