研究目的
Investigating the performance of TiO2@g-C3N4 heterojunction in the photodegradation of tetracycline antibiotics, focusing on the structure-related charge separation behavior.
研究成果
The TiO2@g-C3N4 heterojunction exhibits improved photocatalytic activity for tetracycline degradation due to its directional charge migration behavior and compact structure. The study underscores the importance of microstructure control and charge separation in developing high-reactive photocatalysts.
研究不足
The study focuses on the photocatalytic degradation of tetracycline antibiotics and may not be directly applicable to other contaminants. The synthesis and characterization techniques are specific to the materials used.
1：Experimental Design and Method Selection:
The study employs TiO2 nanowires as carriers for the in situ growth of discrete g-C3N4 to form a heterojunction photocatalyst. The methodology includes thermal polymerization and characterization techniques.
2：Sample Selection and Data Sources:
Samples include TiO2 nanowires, bulk g-C3N4, and TiO2@g-C3N4 heterojunction. Data is sourced from photocatalytic degradation experiments and material characterization.
3：List of Experimental Equipment and Materials:
Includes P25 (Degussa), Te?on-lined stainless steel vessel, SmartLab-3KW diffractometer, Hitachi S4800 SEM, JEOL 2100 TEM, PHI5000 Versaprobe system, UV-3010 UV–vis-NIR spectrometer, FL3-221 ?uorescence spectrophotometer, Vector-22 spectrometer.
4：Experimental Procedures and Operational Workflow:
Synthesis involves hydrothermal treatment, acid washing, annealing, and thermal polymerization. Characterization includes XRD, SEM, TEM, XPS, UV–vis, PL, and FTIR analyses.
5：Data Analysis Methods:
Photocatalytic activity is evaluated based on tetracycline degradation efficiency. Material properties are analyzed through various spectroscopic and microscopic techniques.
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Hitachi S4800 scanning electron microscopy
S4800
Hitachi
Used for morphology analysis.
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JEOL 2100 transmission electron microscopy
2100
JEOL
Used for morphology analysis.
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UV-3010 UV–vis-NIR spectrometer
3010
Shimadzu
Used for light absorption analysis.
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P25
Degussa
Used as a precursor for the synthesis of TiO2 nanowires.
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SmartLab-3KW diffractometer
Rigaku
Used for X-ray diffraction analysis.
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PHI5000 Versaprobe system
5000
PHI
Used for X-ray photoelectron spectroscopy analysis.
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FL3-221 ?uorescence spectrophotometer
3-221
Jobin Yvon
Used for photoluminescence analysis.
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Vector-22 spectrometer
22
Used for Fourier Transformed Infrared analysis.
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