研究目的
Investigating the effects of Au nanoparticles and ZnO morphology on the photocatalytic performance of Au doped ZnO/TiO2 films.
研究成果
The incorporation of Au nanoparticles and optimization of ZnO morphology significantly enhance the photocatalytic performance of Au doped ZnO/TiO2 films by facilitating charge transfer and suppressing electron-hole recombination. The study provides valuable insights for the development of noble metal doped, semiconductor based photocatalysts.
研究不足
The study focuses on the photocatalytic degradation of methyl orange under simulated sunlight, and the findings may not be directly applicable to other pollutants or light sources. The influence of other noble metals or doping concentrations on the photocatalytic performance was not explored.
1：Experimental Design and Method Selection:
Hydrothermal processing and sol-gel spin-coating were employed to fabricate Au doped ZnO nanocomposite films on TiO2 seeding layer.
2：Sample Selection and Data Sources:
Si substrates were used for the deposition of TiO2 seeding layer and subsequent growth of ZnO nanostructures.
3：List of Experimental Equipment and Materials:
Field emission scanning electron microscope (FESEM, JSM-6360LV), X-ray diffraction spectroscopy (XRD, D/MAX 2550 VB/DC), High Resolution Transmission Electron Microscopy (HRTEM, JEM-2100), UV-vis spectrophotometer (Cary 500), fluorescence spectrometer (PerkinElmer LS55), PTI Timemaster 3 for transient PL measurements.
4：Experimental Procedures and Operational Workflow:
TiO2 seeding layer was prepared by sol-gel spin-coating, followed by hydrothermal growth of ZnO nanostructures in the presence of Au nanoparticles.
5：Data Analysis Methods:
UV-vis absorption spectra, PL spectra, and transient PL decaying were analyzed to evaluate the photocatalytic performance and charge transfer properties.
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