研究目的
To synthesize and evaluate the photocatalytic performance of MIL-88A/BiOI composite for the degradation of organic dyes under visible light irradiation.
研究成果
The MIL-88A/BiOI composite demonstrated enhanced photocatalytic activity for the degradation of organic dyes under visible light, attributed to effective charge carrier separation and the synergistic effect between MIL-88A and BiOI. The study highlights the potential of MOF-based composites in environmental remediation.
研究不足
The study focuses on the degradation of specific dyes (MB and AB92) and may not be directly applicable to other organic pollutants. The photocatalytic efficiency under different environmental conditions was not explored.
1：Experimental Design and Method Selection:
The study involved the synthesis of MIL-88A/BiOI composite via a hydrothermal method and its application in the photocatalytic degradation of MB and AB92 dyes under visible light irradiation.
2：Sample Selection and Data Sources:
Methylene Blue (MB) and Acid Blue 92 (AB92) were used as model organic pollutants. The samples were characterized using XRD, SEM, TEM, FT-IR, EIS, UV-Vis absorption spectra, BET, PL spectra, and photoelectrochemical experiments.
3：List of Experimental Equipment and Materials:
ABB BOMER MB series spectrophotometer, Philips X’pert instrument, Philips XL30 field-emission scanning electron microscope, Philips CM30 device, Autolab potentiostat/galvanostat, UV–Vis spectrophotometer (GBC Cintra 40), Varian Cary Eclipse spectrometer, electrochemical system (SP-150, France).
4：Experimental Procedures and Operational Workflow:
The photocatalytic activity was evaluated by measuring the degradation of MB and AB92 under visible light irradiation. The process involved stirring the solution mixture in the dark for equilibrium, followed by irradiation with a 300-W xenon lamp.
5：Data Analysis Methods:
The degradation kinetics were analyzed using the Langmuir–Hinshelwood model. The role of reactive species was investigated using scavengers like 1,4-benzoquinone (BQ), KI, and tert-butanol (t-BuOH).
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Autolab potentiostat/galvanostat
EG&G model 263A
Autolab
Electrochemical impedance spectroscopy
-
ABB BOMER MB series spectrophotometer
MB series
ABB
Fourier transform infrared spectroscopy recording
-
Philips X’pert instrument
X’pert
Philips
X-ray diffraction patterns analysis
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Philips XL30 field-emission scanning electron microscope
XL30
Philips
Surface morphological analysis
-
Philips CM30 device
CM30
Philips
Transmission electron microscopy
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UV–Vis spectrophotometer
GBC Cintra 40
GBC
UV–Vis absorption spectra determination
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Varian Cary Eclipse spectrometer
Cary Eclipse
Varian
Photoluminescence spectra study
-
electrochemical system
SP-150
France
Photoelectrochemical experiment analysis
-
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