研究目的
Investigating the effect of hydrothermal synthesis temperature on the physicochemical properties and photocatalytic activity of TiOF 2 /TiO 2 composite nanosheets.
研究成果
TiOF 2 /TiO 2 nanosheets prepared by hydrothermal synthesis at 160 °C exhibited the highest photocatalytic activity, attributed to the optimal combination of TiO 2 and TiOF 2. The study demonstrates the importance of hydrothermal synthesis temperature in determining the physicochemical properties and photocatalytic activities of the resulting catalysts.
研究不足
The study focuses on the effect of hydrothermal synthesis temperature on the properties and photocatalytic activity of TiOF 2 /TiO 2 composite nanosheets, but does not explore other synthesis parameters or the scalability of the process.
1：Experimental Design and Method Selection:
Hydrothermal processing of Ti(OBu)4 in the presence of aqueous HF solution at different temperatures (140, 160, 180, and 200 °C).
2：Sample Selection and Data Sources:
Samples were characterized using XRD, XPS, SEM, TEM, UV–vis diffuse reflectance spectra, EPR, PL spectra, and photocatalytic degradation tests.
3：List of Experimental Equipment and Materials:
D8 ADVANCE X-ray diffractometer, ESCALAB-250 XPS instrument, FESEM-4800 field emission scanning electron microscope, JEM-2100F transmission electron microscope, UV-2550 spectrophotometer, ELEXSYS E500 EPR spectrometer, FLS920 steady-state fluorescence spectrometer.
4：Experimental Procedures and Operational Workflow:
Preparation of photocatalysts, characterization, photocatalytic activity tests, and electrochemical analysis.
5：Data Analysis Methods:
Calculation of first-order reaction kinetics constant, analysis of UV–vis absorbance spectra, and evaluation of charge transfer resistance by EIS.
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JEM-2100F transmission electron microscope
JEM-2100F
JEOL
Recording morphologies and microstructures of samples
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UV-2550 spectrophotometer
UV-2550
Shimadzu
Obtaining UV–vis diffuse reflectance spectra
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ELEXSYS E500 spectrometer
ELEXSYS E500
Bruker
Collecting Electron Paramagnetic Resonance spectra
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FLS920 steady-state fluorescence spectrometer
FLS920
Edinburgh
Recording Photoluminescence spectra
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D8 ADVANCE X-ray diffractometer
D8 ADVANCE
Bruker
Acquiring X-ray diffraction data
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ESCALAB-250 XPS instrument
ESCALAB-250
Thermo
Performing X-ray photoelectron spectroscopy measurements
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FESEM-4800 field emission scanning electron microscope
FESEM-4800
Hitachi
Recording morphologies and microstructures of samples
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PARSTAT 2273 potentiostat/galvanostat
PARSTAT 2273
Advanced Measurement Technology Inc
Obtaining photocurrent response and electrochemical impedance spectroscopy data
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