Highly sensitive detection of methyl parathion based on morning glory-like porous carbon nanosheets modified electrochemical sensor

In this work, we proposed a template-free synthesis strategy for the preparation of morning glory-like porous carbon nanosheets (MGPCS) with three-dimensional (3D) interconnected porous carbon structure, which was applied to modify the glassy carbon electrode (GCE) for the fabrication of methyl para...

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Bibliographic Details
Published in:Journal of porous materials 2023-10, Vol.30 (5), p.1533-1542
Main Authors: Wan, Xiuying, Wang, Qian, Guo, Xiangxing, Chen, Lumei, E, Ting, Zhao, Hongyuan
Format: Article
Language:English
Subjects:
Carbon
Catalysis
Characterization and Evaluation of Materials
Charge transfer
Chemical sensors
Chemistry
Chemistry and Materials Science
Electrical resistivity
Electrodes
Glassy carbon
High temperature
Methyl parathion
Nanosheets
Physical Chemistry
Reproducibility
Sensors
Sodium citrate
Synthesis
Thermal decomposition
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Summary:In this work, we proposed a template-free synthesis strategy for the preparation of morning glory-like porous carbon nanosheets (MGPCS) with three-dimensional (3D) interconnected porous carbon structure, which was applied to modify the glassy carbon electrode (GCE) for the fabrication of methyl parathion (MP) electrochemical sensor (MGPCS/GCE). MGPCS was successfully prepared by a template-free synthesis strategy with sodium citrate as carbon source. Benefitting from the high-temperature thermal decomposition and acid treatment process, the sodium citrate-derived MGPCS sample presented 3D interconnected morning glory-like porous carbon structure with good electrical conductivity, which provided more efficient charge transfer channels. In particular, the morning glory-like surface morphology significantly increased the specific surface area and adsorption capacity of sensing electrode. Under the optimal conditions, the fabricated MGPCS/GCE sensor showed highly sensitive MP detection property with low limit of detection of 10.7 nM (Linear MP concentration: 0.1–15 µM). Moreover, the fabricated sensor presented good reproducibility, repeatability, stability, and selectivity. The good practical performance of the MGPCS/GCE sensor was confirmed by detecting the MP amount in apple juice and peach juice samples.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-023-01439-x