研究目的
Investigating the green synthesis of fluorescent carbon quantum dots from betel leafs for selective and sensitive detection of Fe3+ ions in aqueous medium.
研究成果
The study successfully demonstrated the green synthesis of fluorescent carbon quantum dots from betel leafs for selective and sensitive detection of Fe3+ ions, with a detection limit of 50–150 nM and a good linear relationship (R2 = 0.9944).
研究不足
The study focuses on the detection of Fe3+ ions and does not explore the potential for detecting other metal ions or the application in complex biological systems.
1：Experimental Design and Method Selection:
Hydrothermal method was used for the synthesis of carbon quantum dots from betel leafs.
2：Sample Selection and Data Sources:
Betel leafs were collected from a local vendor and used as the carbon source.
3：List of Experimental Equipment and Materials:
UV-Vis spectrophotometer, FT-IR spectrophotometer, X-ray photoelectron spectroscopy, X-ray diffraction, Photoluminescent spectra, Transmission electron microscope.
4：Experimental Procedures and Operational Workflow:
Betel leafs were crushed, treated hydrothermally, filtered, and centrifuged to obtain carbon quantum dots.
5：Data Analysis Methods:
The synthesized CQDs were characterized for their optical properties, functional groups, crystalline structure, and sensitivity towards Fe3+ ions.
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X-ray diffraction
Bruker D8 Advance diffractometer
Bruker
Investigation of structural crystallinity
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UV-Vis spectrophotometer
Shimadzu UV-2600
Shimadzu
Measurement of absorption spectra of CQDs
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FT-IR spectrophotometer
Agilent Resolution Pro FT-IR
Agilent
Examination of functional groups and material purities
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X-ray photoelectron spectroscopy
Thermo Fisher Scientific Co.
Thermo Fisher Scientific
Investigation of crystalline structure and surface functional properties
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Photoluminescent spectra
HORIBA JOBIN-YVON Fluoromax-4 spectro fluorometer
HORIBA JOBIN-YVON
Recording of excitation and emission wavelength
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Transmission electron microscope
JEM-2100 Plus Electron Microscope
Japan
Examination of surface morphology and defined particle sizes
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