研究目的
Investigating the photoluminescence enhancement of carbon quantum dots through solvothermal synthesis followed by microwave irradiation and their application as a fluorescence probe for ferric ion determination.
研究成果
Microwave irradiation was successfully used to enhance the photoluminescence of CQDs prepared via solvothermal method, leading to a significant improvement in the detection limit for Fe3+ ions. The study provides a valuable tool for enhancing photoluminescence quantum yields, beneficial for biosensing and bioimaging applications.
研究不足
The exact mechanism of photoluminescence enhancement via microwave irradiation is not fully understood. The study suggests the need for more experimental and theoretical studies for a complete insight.
1：Experimental Design and Method Selection:
The study combined solvothermal synthesis with microwave irradiation for the preparation of carbon quantum dots (CQDs).
2：Sample Selection and Data Sources:
L-arginine and phosphoric acid were used as precursors for the synthesis of nitrogen and phosphorous doped CQDs.
3：List of Experimental Equipment and Materials:
A conventional household microwave (750 Watt), Teflon-lined autoclave, JEOL transmission electron microscope (JEOL 2010 F), Varian 640 FTIR spectrophotometer, Agilent spectrophotometer (Cary 6000), Fluorolog-3 (Horiba), Kratos Analytical XPS, Xenocs Ganesha Small Angle X-Ray Scattering, CHI 660 electrochemical analyzer.
4：Experimental Procedures and Operational Workflow:
The CQDs were prepared by solvothermal heating followed by microwave irradiation. The optical properties, morphology, and structure were characterized. The CQDs were then used as a fluorescence probe for Fe3+ ion determination.
5：Data Analysis Methods:
The photoluminescence quantum yield was calculated using William’s method. The quenching mechanism was analyzed through cyclic voltammetry and optical measurements.
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Transmission Electron Microscope
JEOL 2010 F
JEOL
Measuring the size and morphology of the CQDs
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UV-Vis Spectrophotometer
Cary 6000
Agilent
Recording UV-Vis absorption spectra
Cary 60 UV-Vis Spectrophotometer
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Electrochemical Analyzer
CHI 660
CH Instrument
Recording cyclic voltammetry
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FTIR Spectrophotometer
Varian 640
Varian
Recording FTIR spectra
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Fluorolog-3
Fluorolog
Horiba
Recording PL measurements
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X-ray Photoelectron Spectrometer
Kratos Analytical
Kratos Analytical
Recording high resolution XPS spectra
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Small Angle X-Ray Scattering
Xenocs Ganesha
Xenocs
Recording XRD spectra
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