研究目的
To develop a facile method for the determination of Ferrous (Fe(II)) and Ferric (Fe(III)) ions using phosphate functionalized graphitic carbon nitride quantum dots (Ph-g-CNQDs) in an aqueous medium.
研究成果
The developed probe was applied to various real samples of water collected from different sources and good recoveries were observed which entitles this method as apt for real time monitoring.
研究不足
The synthesis involved the higher temperature operation.
1：Experimental Design and Method Selection:
The synthesis of Ph-g-CNQDs was carried out using the solvothermal technique with oleic acid as solvent.
2：Sample Selection and Data Sources:
Water samples collected from different sources such as river, sea and drinking water were spiked with analyte metal ions.
3：List of Experimental Equipment and Materials:
Citric acid, Dipotassium hydrogen phosphate, Urea, metal acetates and nitrates, oleic acid, hexane.
4：Experimental Procedures and Operational Workflow:
The mixture was heated in furnace for 15 min under
5：15 K during which it changes to dark brown color. The brown colored product was washed five times with hexane and the final product was kept in vacuum desiccator to get final dried product. Data Analysis Methods:
4 The quenching experiments for both the analytes were carried out at different temperatures and using Stern-Volmer equation, graphs were plotted between (F0-F)/F and concentration of the target analyte.
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Fourier Transform Infrared spectroscopy
FT-IR
Perkin Elmer
Examination of functional groups on the surface of Ph-g-CNQDs
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UV–vis absorption spectrophotometer
Lambda 750
Perkin Elmer
UV–vis absorption studies
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Photoluminescence spectrophotometer
F-7000 FL
Hitachi
Photoluminescence emission studies
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X-ray diffractometry
XRD
Characterization of crystalline nature of the synthesized Ph-g-CNQDs
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X-ray Photoelectron spectroscopy
XPS
Examination of functional groups on the surface of Ph-g-CNQDs
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Transmission electron microscopy
TEM
Morphological characterization of as prepared Ph-g-CNQDs
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Waterbath
Julabo
Temperature studies
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pH meter
P200 benchtop
Cole-Parmer
pH studies
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