Abstract
Copper-doped carbon dots and aminated carbon nanotubes (Cu-CDs/NH2-CNTs) nanocomposites were synthesized by a one-step growth method, and the composites were characterized for their performance. An electrochemical sensor for sensitive detection of bisphenol A (BPA) was developed for using Cu-CDs/NH2-CNTs nanocomposites modified with glassy carbon electrodes (GCE). The sensor exhibited an excellent electrochemical response to BPA in 0.2 M PBS (pH 7.0) under optimally selected conditions. The linear range of the sensor for BPA detection was 0.5–160 μM, and the detection limit (S/N = 3) was 0.13 μM. Moreover, the sensor has good interference immunity, stability and reproducibility. In addition, the feasibility of the practical application of the sensor was demonstrated by the detection of BPA in bottled drinking water and Liu Yang River water.
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Funding
This work was financially supported by the Major Projects of Scientific Research in Higher Educational Institutions in Anhui Province, China (2023AH040201), the Natural Science Foundation of Hunan Province, China (2020JJ4035), the Foundation of Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Resource Utilization (18KFXM07), the Key Projects of Scientific Research in Higher Educational Institutions in Anhui Province (2022AH052058), and Department of Science and Technology of Yunnan Province (202201AU070213 and 202101AZ070001-118).
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Liu, W., Li, M., Zhang, P. et al. One-step growth of Cu-doped carbon dots in amino-modified carbon nanotube–modified electrodes for sensitive electrochemical detection of BPA. Microchim Acta 191, 309 (2024). https://doi.org/10.1007/s00604-024-06344-x
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DOI: https://doi.org/10.1007/s00604-024-06344-x