研究目的
Investigating the enhanced visible-light photocatalytic activity of BiOAc0.67I0.33 solid solutions for the degradation of multiple pollutants.
研究成果
The BiOAc0.67I0.33 solid solution exhibits enhanced visible-light photocatalytic activity due to its optimal energy levels and ultrathin sheetlike structure, which effectively impedes the recombination of photogenerated electron-hole pairs. This makes it a promising candidate for environmental remediation applications.
研究不足
The study focuses on the photocatalytic activity under visible light irradiation and does not explore the potential under other light sources or the scalability of the synthesis method for industrial applications.
1：Experimental Design and Method Selection:
BiOAcxI1-x solid solutions were fabricated by a co-precipitation method. The structures and properties of the catalysts were characterized by X-ray di?raction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), X-ray photoelectron spectroscopy (XPS), UV–vis di?use re?ectance spectra (DRS), X-ray ?uorescence (XRF), total organic carbon (TOC) value, the photocurrent intensity, electrochemical impedance spectra (EIS), and Mott-Schottky plots.
2：Sample Selection and Data Sources:
The removal performance of catalysts for rhodamine B (RhB), malachite green (MG) and colorless salicylic acid (SA) was evaluated under visible light irradiation.
3：List of Experimental Equipment and Materials:
Instruments used include XRD, TEM, HRTEM, XPS, DRS, XRF, TOC analyzer, photocurrent intensity measurement setup, EIS analyzer, and Mott-Schottky plot equipment.
4：Experimental Procedures and Operational Workflow:
The photocatalytic activity was measured by the degradation efficiency of pollutants under visible light irradiation.
5：Data Analysis Methods:
The photodegradation efficiency was calculated by (C0eC)/C0 × 100%, where C0 and C is the concentration of pollutants at initial and given irradiation time.
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X-ray diffractometer
Characterization of phase structures of samples
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Transmission electron microscope
Morphology observation of samples
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High-resolution TEM
Detailed morphology and lattice fringes observation
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X-ray photoelectron spectroscopy
Surface composition and elemental chemical states analysis
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UV–vis diffuse reflectance spectra
Optical properties investigation
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X-ray fluorescence
Chemical composition checking
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Total organic carbon analyzer
Mineralization rate measurement
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Photocurrent intensity measurement setup
Charge separation efficiency measurement
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Electrochemical impedance spectra analyzer
Electrochemical property tests
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Mott-Schottky plot equipment
Band potentials assessment
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