研究目的
To investigate the synthesis, characterization, and photocatalytic activity of AgBr/BiOBr/graphene heterojunction for the degradation of phenol under visible light.
研究成果
The AgBr/BiOBr/Gr photocatalyst demonstrated enhanced photocatalytic activity and stability for the degradation of phenol under visible light. The integration of graphene with AgBr/BiOBr reduced the recombination of photogenerated electron-hole pairs and improved the photocatalytic performance. The photocatalyst showed significant stability and recyclability over ten catalytic cycles.
研究不足
The study focuses on the degradation of phenol under controlled laboratory conditions. The scalability and applicability of the photocatalyst in real wastewater treatment scenarios need further investigation.
1：Experimental Design and Method Selection:
The synthesis of AgBr/BiOBr/Gr photocatalyst was carried out using a facile co-precipitation method under acid conditions. The photocatalyst was characterized using FESEM, TEM, XRD, FTIR, XPS, Raman, and PL analyses.
2：Sample Selection and Data Sources:
Phenol was used as the model pollutant for photocatalytic degradation studies.
3：List of Experimental Equipment and Materials:
Equipment included FESEM (Nava Nano SEM-45), TEM (FP/5022-Tecnai G2 20 S-TWIN), AFM (Dimensional Icon system), FTIR (Perkin-Elmer Spectrometer), XRD (Panalytical’s X’PertPro diffractometer), UV–vis spectrophotometer (Thermo Fischer, USA), and HPLC (Water HPLC, Austria). Materials included Bi(NO3)3·5H2O, AgNO3, KBr, and graphene.
4：Experimental Procedures and Operational Workflow:
The photocatalytic activity was evaluated in a self-developed slurry type batch reactor under visible light irradiation.
5：Data Analysis Methods:
The degradation process was analyzed using pseudo first order kinetics, and the mineralization of phenol was confirmed by COD and CO2 estimation.
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