研究目的
To investigate the degradation of methylparaben (MeP) using Fe-doped WO3 in combination with H2O2 under the influence of visible light irradiation.
研究成果
The study successfully synthesized Fe-doped WO3 nanoparticles with enhanced photocatalytic activity under visible light. The optimal conditions for MeP degradation were identified, demonstrating the potential of Fe-doped WO3 as an effective photocatalyst for water treatment.
研究不足
The study focuses on the degradation of methylparaben under specific conditions and does not explore the degradation of other pollutants or the long-term stability of the photocatalyst.
1：Experimental Design and Method Selection
Microwave irradiation technique was used for the synthesis of WO3 and Fe-doped WO3 nanoparticles. The photocatalytic activity was evaluated under visible light irradiation.
2：Sample Selection and Data Sources
Methylparaben (MeP) in aqueous solution was used as the target pollutant. The samples were characterized using various techniques including XRD, TEM, BET, Raman spectroscopy, PL, XPS, and UV-DRS.
3：List of Experimental Equipment and Materials
Domestic microwave LG MS 283 MC 900 W, Phillips X’Pert-PRO PANalytical X-ray diffractometer, WITec Raman spectrometer, Jeol JEM-2100 TEM, Micrometrics ASAP 2020 BET analyzer, SPECS PHOIBOS 150 XPS, Perkin-Elmer LS 45 Fluorescence spectrometer, Shimadzu 2450 UV-DRS.
4：Experimental Procedures and Operational Workflow
The synthesis involved dissolving H2O4W in NaOH and adding HNO3, followed by microwave irradiation. The photocatalytic degradation experiments were conducted under visible light with varying conditions of pH, H2O2 concentration, and catalyst dosage.
5：Data Analysis Methods
Chemometric analysis was performed using STATISTICA software to optimize the photocatalytic degradation conditions.
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Fluorescence spectrometer
LS 45
Perkin-Elmer
Recording photoluminescence.
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UV-DRS
2450
Shimadzu
Ultraviolet diffuse reflectance spectroscopy.
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Raman spectrometer
WITec
WITec
Recording Raman spectra.
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Transmission electron microscope
JEM-2100
Jeol
Determination of morphologies and particle sizes.
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Microwave
LG MS 283 MC
LG
Used for the synthesis of WO3 and Fe-doped WO3 nanoparticles.
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X-ray diffractometer
X’Pert-PRO PANalytical
Phillips
Characterization of crystallographic patterns.
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BET analyzer
ASAP 2020
Micrometrics
Evaluation of surface area.
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XPS
PHOIBOS 150
SPECS
X-ray photoelectron spectroscopy measurements.
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