研究目的
Investigating the synthesis of LaFeO3/Bentonite Nanocomposite for enhanced photocatalytic degradation of methylene blue under visible light irradiation.
研究成果
The LaFeO3/Bentonite nanocomposite synthesized via sol-gel method exhibited excellent photocatalytic activity for MB degradation under visible light, achieving up to 95% removal in 60 minutes. The combination of photocatalytic and photo-Fenton like mechanisms enhances the degradation efficiency, making it a promising candidate for wastewater treatment.
研究不足
The study focuses on the degradation of MB under visible light and may not be directly applicable to other pollutants or light conditions. The scalability and cost-effectiveness of the synthesis method for industrial applications are not discussed.
1：Experimental Design and Method Selection:
The nanocomposite was synthesized using a citric acid assisted sol-gel method. The photocatalytic activity was evaluated under visible light irradiation.
2：Sample Selection and Data Sources:
Methylene Blue (MB) was used as the model pollutant. The samples were characterized using FTIR, PXRD, SEM, and UV-Vis diffuse reflectance spectroscopy.
3：List of Experimental Equipment and Materials:
La(NO3)3·6H2O, Fe(NO3)3·9H2O, citric acid, Bentonite, and ethyl alcohol were used. Equipment included a Scanning electron microscopy (Carlzeiss supra 55), Powder X-ray diffractometer (Schimadzu), and UV–Vis absorption spectrophotometer (TU-1901).
4：1).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The synthesis involved dissolving metal nitrates and citric acid in a mix-solvent, adding Bentonite, forming a gel, drying, and calcining at 600°C. Photocatalytic activity was assessed by degrading MB under visible light.
5：Data Analysis Methods:
The degradation rate was calculated from absorbance measurements at 624 nm. The energy band gap was determined from reflectance spectra.
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