研究目的
Investigating the synthesis and photocatalytic performance of MnWO4/TmVO4 ternary nano-hybrids in the degradation of organic dyes under visible light.
研究成果
The MnWO4/TmVO4 ternary nano-hybrids synthesized via a sonochemical method exhibit enhanced photocatalytic activity under visible light, attributed to improved separation of photogenerated electron-hole pairs. The optimal MnWO4 content was found to be 20 wt%, achieving up to 99.2% degradation of Rh B dye.
研究不足
The study does not explore the long-term stability of the nano-hybrids beyond five reaction cycles or their performance under different environmental conditions.
1：Experimental Design and Method Selection
The study employed a sonochemical method for the synthesis of MnWO4/TmVO4 ternary nano-hybrids, characterized using XRD, EDX, TEM, DRS, BET, PL, and VSM.
2：Sample Selection and Data Sources
Samples were prepared using manganese nitrate, sodium tungstate, ammonium vanadate, and thulium nitrate dissolved in distilled water.
3：List of Experimental Equipment and Materials
Ultrasonic waves, magnetic stirrer, calcination furnace, UV-Vis spectrometer, and a 400 W Osram lamp for photocatalytic measurements.
4：Experimental Procedures and Operational Workflow
The synthesis involved mixing solutions under ultrasonic waves and magnetic stirring, followed by washing and calcination. Photocatalytic activity was measured by degrading organic dyes under visible light.
5：Data Analysis Methods
Photocatalytic efficiency was analyzed using UV-Vis spectroscopy, and the kinetics of degradation were described by the pseudo-first-order Langmuir-Hinshelwood kinetic model.
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