One-step growth of Cu-doped carbon dots in amino-modified carbon nanotube–modified electrodes for sensitive electrochemical detection of BPA

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发表日期：

2024年5月7日

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Wei Liu,
Muyi Li,
Pengli Zhang,
Hongmei Jiang,
Wenjun Liu,
Jinyu Guan,
Yanhua Sun,
Xiaoying Liu,
Qiongyao Zeng

摘要

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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