研究目的
To develop a low-cost, water-dispersive, and bright fluorescent probe for sensing Fe(III) by co-doping phosphorus and chlorine into carbon dots (CDs) to enhance their fluorescence quantum yield (QY) and photostability.
研究成果
P,Cl-CDs were successfully synthesized and demonstrated to be an advanced and selective fluorescent nanosensor for Fe(III) detection, with high QY and photostability. The method shows promise for practical applications in medicine, food, and environmental safety.
研究不足
The method has no major limitations if the detection conditions are well controlled. However, the influence of Cu2+ and Al3+ becomes obvious if the pH value changes to pH 5.0 or 6.0, requiring careful pH control before using this sensor for complex samples.
1：Experimental Design and Method Selection:
Hydrothermal treatment of maltose in the presence of phosphoric and hydrochloric acids to prepare P,Cl-CDs.
2：Sample Selection and Data Sources:
Maltose, phosphoric acid, and hydrochloric acid as C, P, and Cl sources, respectively.
3：List of Experimental Equipment and Materials:
Teflon-lined stainless-steel autoclaves, electrothermal blast oven, JEM-2100, atomic force microscopy (AFM), EscaLab-250Xi, Nicolet IS50 FTIR spectrometer, X-ray diffraction (XRD) patterns, LS55 fluorescence spectrometer, Lambda 265 UV-vis absorption spectrometer.
4：Experimental Procedures and Operational Workflow:
Synthesis of P,Cl-CDs via hydrothermal reaction, characterization of their structure, morphology, and optical properties, and application as a fluorescent probe for Fe(III) detection.
5：Data Analysis Methods:
Use of Stern-Volmer equation to investigate the quenching mode, fluorescence lifetime measurements, and UV-vis absorption spectra analysis.
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JEM-2100
JEM-2100
JEOL
Used to characterize the structure and morphology of P,Cl-CDs.
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EscaLab-250Xi
EscaLab-250Xi
Thermo Scientific
Used for XPS analysis of P,Cl-CDs.
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Nicolet IS50 FTIR spectrometer
Nicolet IS50
Thermo Scientific
Used for FTIR analysis of P,Cl-CDs.
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LS55 fluorescence spectrometer
LS55
PerkinElmer
Used to measure the fluorescence spectra of P,Cl-CDs.
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Lambda 265 UV-vis absorption spectrometer
Lambda 265
PerkinElmer
Used to measure the UV-vis absorption spectra of P,Cl-CDs.
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Teflon-lined stainless-steel autoclaves
Used for the hydrothermal synthesis of the P,Cl-CDs.
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electrothermal blast oven
Used for the hydrothermal synthesis of the P,Cl-CDs.
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atomic force microscopy (AFM)
Used to characterize the morphology of P,Cl-CDs.
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X-ray diffraction (XRD) patterns
Used for XRD analysis of P,Cl-CDs.
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