研究目的
To synthesize a novel Ag/4-Br/Bi2O3 composite photocatalyst and evaluate its photocatalytic activity under visible light for the degradation of methyl orange (MO).
研究成果
The Ag/4-Br/Bi2O3 composite photocatalyst exhibits enhanced photocatalytic activity for MO degradation under visible light, attributed to the expansion of photoresponse range and acceleration of carriers transmit due to Ag nanoparticles. The study proposes a possible photocatalytic mechanism and highlights the composite's potential for environmental purification applications.
研究不足
The study does not address the long-term stability and recyclability of the Ag/4-Br/Bi2O3 photocatalyst under operational conditions. Additionally, the scalability of the synthesis method for industrial applications is not discussed.
1：Experimental Design and Method Selection:
The Ag/4-Br/Bi2O3 composite photocatalyst was synthesized via hydrothermal and photodeposition methods.
2：Sample Selection and Data Sources:
The samples were characterized using XRD, SEM, TEM, and UV–vis analysis.
3：List of Experimental Equipment and Materials:
Equipment included a Rigaku D/max 2500 X-ray diffractometer, TEM (JEM-2100F), SEM (S-4800), and UV-vis spectrometer (PerkinElmer Lambda750S). Materials included Bi2O3, 4-Bromothiophenol, AgNO3, and methyl orange.
4：Experimental Procedures and Operational Workflow:
The synthesis involved ultrasonic dispersion, irradiation under visible light, addition of AgNO3 solution, centrifugation, washing, and drying.
5：Data Analysis Methods:
The photocatalytic activity was evaluated by the degradation rate of MO under visible light, with reaction kinetics analyzed.
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