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Ce-doped molybdenum selenide: a promising electrochemical sensor for sensitive determination of p-nitrophenol

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Abstract

It is crucial to establish sensitive and selective electrochemical sensors for the detection of pollutants in the environment. In this research, CeMoSe2 composite, prepared via one-step hydrothermal approach, was constructed as an electrochemical sensor for sensitive determination of 4-nitrophenol (4-NP). Notably, the modified electrode (CeMoSe2/GCE) got a great deal of progress to catalyze the oxidation of 4-NP on electrode on account of the abundant active sites and preeminent electron transfer channels of CeMoSe2. At the same time, a series of characterizations and electrochemical measurements were employed to investigate the electrochemical properties of CeMoSe2/GCE to detect 4-NP. As a result, CeMoSe2/GCE exhibited linear responses towards 4-NP in the concentration ranges of 0.10~120 μM and the detection limit was calculated as 0.056 μM (S/N = 3). Besides, under optimized experimental conditions, the electrochemical sensor possessed outstanding catalytic performance for the detection of 4-NP. In a word, the results showed that CeMoSe2/GCE was a promising electrode with superb long-term stability and reproducibility for the determination of 4-NP.

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Funding

This work was supported by Sichuan Provincial College Students Innovation and Entrepreneurship Training Program (Grant No. S202010619008) and the International Science and Technology Cooperation Laboratory of Micro-nanoparticle Application Research of Southwest University of Science and Technology (Grant No. 19MNA001). National Natural Science Foundation of China (41872039 and 41831285).

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  1. School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Lei Liao, Weishan Tang, Lu Yang, Rong Su, Lei Wang, Ping He & Dingming Yang

  2. International Science and Technology Cooperation Laboratory of Micro-Nanoparticle Application Research, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Ping He

  3. Key Laboratory of Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang, 621010, People’s Republic of China

    Liang Bian

  4. School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People’s Republic of China

    Bin Tang

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  1. Lei Liao
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Liao, L., Tang, W., Yang, L. et al. Ce-doped molybdenum selenide: a promising electrochemical sensor for sensitive determination of p-nitrophenol. Ionics 29, 2053–2063 (2023). https://doi.org/10.1007/s11581-023-04937-9

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