研究目的
To synthesize and evaluate the photocatalytic activity of a new magnetic photocatalyst MnxZn1-xFe2O4/α-Bi2O3 for the degradation of Rhodamine B (RhB) under simulated sunlight.
研究成果
The composite magnetic photocatalyst MnxZn1-xFe2O4/α-Bi2O3 exhibits excellent photocatalytic activity and stability for the degradation of RhB under simulated sunlight. The magnetic properties facilitate easy separation and reuse, making it a promising candidate for wastewater treatment.
研究不足
The study focuses on the degradation of RhB under simulated sunlight. The practical application in real wastewater treatment and the effect of other pollutants were not investigated.
1：Experimental Design and Method Selection:
The composite magnetic photocatalyst MnxZn1-xFe2O4/α-Bi2O3 was synthesized using the dip-calcination method. The photocatalytic activity was evaluated by the degradation of RhB under simulated sunlight.
2：Sample Selection and Data Sources:
RhB was used as the model pollutant. The samples were characterized by XRD, FTIR, UV-vis DRS, SEM, and VSM.
3：List of Experimental Equipment and Materials:
Bismuth nitrate hydrate, sodium hydroxide, zinc sulfate, manganese sulfate, iron chloride hexhydrate, ammonium oxalate, ammonia water, and other reagents were used. Equipment included an X-ray diffractometer, FTIR spectrometer, SEM, UV-vis spectrophotometer, and vibrating sample magnetometer.
4：Experimental Procedures and Operational Workflow:
The synthesis involved co-precipitation for MnxZn1-xFe2O4, calcination for α-Bi2O3, and dip-calcination for the composite. Photocatalytic activity was tested under simulated sunlight.
5：Data Analysis Methods:
The degradation rate of RhB was measured using a UV-vis spectrophotometer. The magnetic properties were analyzed using VSM.
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