研究目的
To improve tungsten oxide catalysts for increased efficiency in photocatalytic degradation of furfural under visible light and compare the efficiency of modified tungsten oxide with undoped and commercial tungsten oxide.
研究成果
3%wt Fe-doped tungsten oxide provides the highest acceleration rate in photocatalytic degradation of furfural, showing the most potential with the conversion of furfural equal to 68% and the highest reaction rate constant.
研究不足
The study focuses on the photocatalytic degradation of furfural under visible light using doped tungsten oxide catalysts. Potential areas for optimization include the doping levels and the synthesis process to further enhance photocatalytic efficiency.
1：Experimental Design and Method Selection:
Tungsten oxide nanoparticles were doped with Fe/Cu/Ti at 1%wt, 2%wt, and 3%wt, synthesized by flame spray pyrolysis technique (FSP).
2：Sample Selection and Data Sources:
Precursor solutions prepared with tungsten hexachloride used in WO3 synthesis were fed into flame spray pyrolysis machine.
3：List of Experimental Equipment and Materials:
Flame spray pyrolysis machine, X-Ray Diffraction (XRD), N2 adsorption/desorption (BET surface area analysis), UV-Vis Spectroscopy (UV-Vis).
4：Experimental Procedures and Operational Workflow:
The mixed precursor was injected through the center capillary of the flame spray pyrolysis nozzle with oxidizing gas into flame zone by syringe pump at flow rate was 5 ml/minute. Feed solution was dispersed with oxygen gas at flow rate of 5 l/min.
5：Data Analysis Methods:
The percentage of degradation was recorded as C/C0 versus with time, while C is concentration of furfural for each irradiated time interval at wavelength 273 nm and C0 is an initial concentration of furfural.
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