研究目的
To synthesize a CNTs modified porous graphitic carbon nitride (CNTs/pg-C3N4) photocatalyst via one step thermal polycondensation and evaluate its visible-light photocatalytic performance for organic pollutant degradation and clean energy production.
研究成果
The CNTs/pg-C3N4 photocatalyst exhibited enhanced visible-light photocatalytic performance for organic pollutant degradation and hydrogen production, attributed to increased surface area, improved visible light absorption, and higher photoinduced charge separation rate. The photocatalyst also showed excellent stability after several recycling experiments.
研究不足
The study focuses on the synthesis and photocatalytic performance of CNTs/pg-C3N4 under visible light, but does not explore its performance under other light conditions or its scalability for industrial applications.
1：Experimental Design and Method Selection
The CNTs/pg-C3N4 photocatalyst was synthesized via one step thermal polycondensation. The methodology included the use of XRD, FTIR, TEM, BET, DRS, and PL for characterization.
2：Sample Selection and Data Sources
NH4Cl and CNTs were dispersed into deionized water, followed by the addition of melamine. The mixture was heated to evaporate the solution, then calcined to produce the photocatalyst.
3：List of Experimental Equipment and Materials
Bruker D8 Advance X-ray powder diffractometer (XRD), Fourier transform infrared spectrum instrument (FTIR), transmission electron microscopy (TEM), surface area and porosity analyzer (Quantachrome NOVA 2000), UV–Vis spectrometer (Agilent Cary 5000), fluorescence spectrometer (Agilent Cary Eclipse).
4：Experimental Procedures and Operational Workflow
The mixture of NH4Cl, CNTs, and melamine was stirred, heated to evaporate the solution, then calcined. The resultant product was characterized using various instruments to evaluate its properties.
5：Data Analysis Methods
The photocatalytic performance was evaluated by degrading RhB under visible light and measuring the hydrogen evolution rate. Data were analyzed using UV–Vis spectrometry and gas chromatography.
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Fluorescence spectrometer
Agilent Cary Eclipse
Agilent
Measurement of photoluminescence spectra
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Bruker D8 Advance X-ray powder diffractometer
D8 Advance
Bruker
Phase identification of photocatalysts
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Fourier transform infrared spectrum instrument
Perkin Elmer 100
Perkin Elmer
Detection of molecular structure of photocatalysts
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Transmission electron microscopy
JEM-2010
JEOL
Recording microtopographies of photocatalysts
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UV–Vis spectrometer
Agilent Cary 5000
Agilent
Measurement of UV–Vis diffuse reflectance spectra
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Surface area and porosity analyzer
Quantachrome NOVA 2000
Quantachrome
Collection of N2 adsorption–desorption isotherms
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Electrochemical station
CHI760
Shanghai Chenhua
Detection of transient photocurrent performance
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Gas chromatography
GC7920
CEAULight
Analysis of the product
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