研究目的
To construct ternary Z-scheme g-C3N4/CNT/BFO composite photocatalysts with enhanced photocatalytic activity for the degradation of organic dyes under simulated sunlight irradiation.
研究成果
The ternary Z-scheme g-C3N4/CNT/BFO composites exhibit significantly enhanced photocatalytic activity compared to bare BFO and g-C3N4/BFO composites, attributed to the efficient separation and migration of photogenerated charges facilitated by CNT as an electron mediator. The composites also demonstrate good photo-Fenton-like catalysis property.
研究不足
The study does not address the long-term stability of the photocatalysts under continuous operation or the scalability of the synthesis method for industrial applications.
1：Experimental Design and Method Selection:
The study employed a hydrothermal method to prepare ternary g-C3N4/CNT/BFO composites. The photocatalytic activity was evaluated by the degradation of acid orange 7 under simulated sunlight irradiation.
2：Sample Selection and Data Sources:
Samples included bare BFO, g-C3N4/BFO composites, and g-C3N4/CNT/BFO composites with varying CNT content.
3：List of Experimental Equipment and Materials:
A 300 W xenon lamp was used for simulated sunlight irradiation. Photocatalytic activity was measured using an ultraviolet-visible (UV-vis) spectrophotometer.
4：Experimental Procedures and Operational Workflow:
The photocatalytic experiment involved stirring the reaction solution in the dark to reach adsorption–desorption equilibrium before irradiation. Samples were taken at intervals to measure AO7 concentration.
5：Data Analysis Methods:
The photocatalytic mechanism was analyzed through photoelectrochemical measurements, photoluminescence spectra, active species trapping experiments, and energy-band potential analysis.
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