研究目的
Investigating the enhanced photocatalytic activity of Bi/Bi2O2?xCO3 photocatalysts synthesized via a one-pot hydrothermal method with glucose as a reducing and morphological control agent.
研究成果
The nested Bi/Bi2O2?xCO3 photocatalysts synthesized via a one-pot hydrothermal method with glucose exhibited enhanced photocatalytic activity for the degradation of LR5B and CIP under both simulated solar and visible light irradiation. The synergistic effects of Bi plasmon and oxygen vacancies were identified as key factors in improving light-harvesting and electron-hole separation, leading to higher photocatalytic efficiency.
研究不足
The study focuses on the synthesis and photocatalytic performance of Bi/Bi2O2?xCO3 under controlled conditions. The scalability of the synthesis method and the photocatalysts' performance in real-world environmental conditions were not explored.
1：Experimental Design and Method Selection:
A one-pot hydrothermal method was used to synthesize Bi/Bi2O2?xCO3 photocatalysts, with glucose serving as both a reducing agent and a morphological control agent.
2：Sample Selection and Data Sources:
The samples were characterized using XRD, SEM, TEM, XPS, ESR, UV-vis DRS, PL spectroscopy, and photoelectrochemical measurements.
3：List of Experimental Equipment and Materials:
Instruments included XRD (X’ Pert 3 Powder), FESEM (SU8010), TEM (JEM-2100), XPS (AXIS-Ultra), UV-vis spectrophotometer (Lambda 950), PL spectrophotometer (FP-6500), and electrochemical system (CHI660E).
4：Experimental Procedures and Operational Workflow:
The synthesis involved dissolving Bi(NO3)3·5H2O in HNO3, adding urea and glucose, adjusting pH to 9 with NaOH, and hydrothermal treatment at 180°C for 1 h.
5：Data Analysis Methods:
Photocatalytic activity was evaluated by degrading LR5B and CIP under simulated solar and visible light irradiation, with data analyzed using pseudo-first-order kinetic models.
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