研究目的
Investigating the synthesis, characterization, and photocatalytic activities of NiWO4/nitrogen doped reduced graphene oxide nanocomposites for the degradation of congo red under visible light radiation.
研究成果
The NiWO4/N-5% rGO nanocomposite demonstrated superior photocatalytic activity for the degradation of congo red under visible light, attributed to its high electron transport property and large surface area. The study provides a foundation for designing efficient photocatalysts for environmental remediation.
研究不足
The study does not address the scalability of the synthesis method for industrial applications or the long-term stability of the nanocomposites under continuous operation.
1：Experimental Design and Method Selection:
The study employed a one-pot hydrothermal method for the synthesis of NiWO4/N-5% rGO nanocomposites. The methodology included the preparation of graphene oxide (GO) by modified Hummer’s method, followed by the synthesis of NiWO4/N-5% rGO nanocomposites through hydrothermal treatment.
2：Sample Selection and Data Sources:
The samples included NiWO4, NiWO4/5% rGO, and NiWO4/N-5% rGO composites. The photocatalytic performance was evaluated using congo red (CR) dye in aqueous solution.
3：List of Experimental Equipment and Materials:
Materials included sodium tungstate dihydrate, nickel nitrate hexahydrate, graphite flakes, and other chemicals from Merck and Alfa Aesar. Equipment included a Rigaku diffractometer, Raman spectrometer, SEM, BET surface area analyzer, and UV-vis spectrophotometer.
4：Experimental Procedures and Operational Workflow:
The synthesis involved ultrasonication, hydrothermal treatment, and calcination. Photocatalytic activity was measured under visible light irradiation using a single lamp photo reactor.
5：Data Analysis Methods:
The data were analyzed using XRD, Raman spectroscopy, SEM, BET, and UV-vis spectroscopy to characterize the materials and evaluate their photocatalytic performance.
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Powder X-ray diffraction
Rigaku diffractometer
Rigaku
Phase purity and crystallinity investigation
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Raman spectrometer
WITec alpha 300
WITec
Structural features evaluation
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Scanning Electron Microscope
Hitachi SU-4800
Hitachi
Surface morphology analysis
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UV-vis Diffuse Re?ectance Spectra
Jasco V650 Spectrophotometer
Jasco
Optical properties analysis
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double beam spectrophotometer
Hitachi U 2000
Hitachi
Concentration monitoring
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N2 adsorption–desorption isotherms
Belsorb mini
BEL-Japan
Surface area and pore size distribution analysis
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single lamp photo reactor
Immersion type photo reactor
Heber scienti?c company
Photocatalytic activity measurement
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