研究目的
Investigating the photocatalytic degradation properties of graphene oxide/WO3 quantum dots/TiO2 (GOWT) films under sunlight and UV light for sewage treatment.
研究成果
GOWT films exhibit higher photocatalytic efficiency and stability compared to GOT films under both sunlight and UV light. The introduction of WO3 quantum dots enhances the photocatalytic performance by improving charge separation and light absorption. GOWT films have potential applications in sewage treatment without causing secondary pollution.
研究不足
The study focuses on the photocatalytic degradation of RhB and may not cover the degradation of other pollutants. The scalability and long-term stability of GOWT films in real sewage treatment applications need further investigation.
1：Experimental Design and Method Selection:
The study synthesized GOWT composite powder using Sol-Gel method and fabricated GOWT films using Al(H2PO4)3 as adhesive and gauze as substrates. The photocatalytic performance was evaluated under sunlight and UV light.
2：Sample Selection and Data Sources:
Rhodamine B (RhB) was used to analyze the adsorption ability and photocatalytic performance of different films.
3：List of Experimental Equipment and Materials:
Equipment included X-ray diffraction (XRD), field emission scanning electron microscope, transmission electron microscopy (TEM), electrochemical impedance spectra (EIS) tester, and UV–vis spectrometer. Materials included graphene oxide, WO3 quantum dots, TiO2, Al(H2PO4)3, and gauze.
4：Experimental Procedures and Operational Workflow:
The photocatalytic activity was measured by injecting RhB solution into a glass bowl containing catalysts at a rate of 5 mL/min using a flow pump. The absorbance value was measured every 10 min.
5：Data Analysis Methods:
The degradation percentage and reaction rate constants were calculated to evaluate the photocatalytic efficiency.
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