研究目的
Investigating the synthesis and enhanced visible light photocatalytic mechanism of 2D-Bi2MoO6/2D-g-C3N4 nanosheet heterojunction composite for wastewater treatment.
研究成果
The 2D-Bi2MoO6/2D-g-C3N4 nanosheet heterojunction composite exhibited enhanced photocatalytic activity under visible light due to its unique 2D/2D structure, larger surface area, suitable bandgap with Z-Scheme, and improved charge carrier separation. The composite showed superior stability and potential for advanced wastewater treatment applications.
研究不足
The study focuses on the photocatalytic degradation of specific dyes under visible light irradiation. The scalability and practical application in real wastewater treatment scenarios were not extensively explored.
1：Experimental Design and Method Selection:
The study employed a hydrothermal strategy to fabricate the 2D-Bi2MoO6/2D-g-C3N4 nanosheet heterojunction. The methodology included the synthesis of g-C3N4 via thermal polymerization of melamine and the subsequent hydrothermal treatment to grow Bi2MoO6 nanosheets on g-C3N4 nanosheets.
2：Sample Selection and Data Sources:
The samples included pure Bi2MoO6, g-C3N4, and their composites with varying molar ratios (1:4, 1:6, 1:8, and 1:12).
3：2). List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Materials used were melamine, (NH4)2MoO4, Bi(NO3)5·5H2O, and others purchased from Sinopharm Chemical Reagent Co., Ltd. Equipment included SEM, TEM, XRD, FT-IR, Raman spectrometer, XPS, UV–vis DRS, and electrochemical workstation.
4：Experimental Procedures and Operational Workflow:
The synthesis involved thermal polymerization of melamine to produce g-C3N4, followed by hydrothermal treatment to form the heterojunction. Photocatalytic activity was evaluated under visible light irradiation using various dyes.
5：Data Analysis Methods:
The data were analyzed using UV–vis spectrophotometry, electrochemical measurements, and various spectroscopic techniques to characterize the materials and their photocatalytic performance.
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Scanning electron microscope
Observation of as-fabricated composites micromorphology
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Transmission electron microscopy
Observation of as-fabricated composites micromorphology
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X-ray diffractometer
D/max-2004 Advance
Measurement of the phase structure
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Fourier transform-infrared spectrometer
Nicolet Avatar 370
Recording of infrared spectra
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Raman spectrometer
LabRam-1B
Jobinyvon
Analysis of Raman spectra
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X-ray photoelectron microscope
PHI-5700 ESCA
Analysis of surface elemental composition and chemical states
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Brunauer-Emmett-Teller N2 specific surface area analyzer
UTOSORB-1
Quantachrome instruments
Measurement of specific surface area
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UV–vis diffuse reflectance spectroscopy
UV 2550
Analysis of optical absorption properties
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Electrochemical workstation
CHI 660 E
Analysis of photoelectrochemical properties
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