研究目的
To develop a novel photocatalytic membrane decorated with PDA/RGO/Ag3PO4 for catalytic dye decomposition, aiming to improve the hydrophilicity and photocatalytic performance of PVDF membranes for wastewater treatment.
研究成果
The PDA/RGO/Ag3PO4/PVDF membrane demonstrated high efficiency in dye degradation and separation under visible light, with improved hydrophilicity and stability over multiple cycles. This approach offers a promising solution for dye wastewater treatment.
研究不足
The study did not explore the long-term stability of the membrane under continuous operation or the scalability of the synthesis process for industrial applications.
1：Experimental Design and Method Selection
The study involved the synthesis of PDA/RGO/Ag3PO4 composite via polydopamine modification and its coating on PVDF membranes. Characterization techniques included FT-IR, XRD, SEM, TEM, EDS, and AFM to analyze the composite and membrane properties.
2：Sample Selection and Data Sources
Materials included PVDF powder, dopamine hydrochloride, graphite powder, and various chemicals for synthesis. Dye solutions were prepared to simulate textile wastewater.
3：List of Experimental Equipment and Materials
Equipment used included X'Pert Pro diffractometer, FT-IR spectrometer, SEM (JEOL JSM-7500F), TEM, AFM (Dimension FastScan), and a goniometer for contact angle measurements.
4：Experimental Procedures and Operational Workflow
The process involved the synthesis of GO and Ag3PO4, preparation of PDA/RGO/Ag3PO4 composite, coating on PVDF membranes, and evaluation of photocatalytic and separation performance under visible light.
5：Data Analysis Methods
UV-vis spectroscopy was used to measure dye degradation efficiency. Contact angle and pure water flux were measured to assess membrane hydrophilicity and performance.
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