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

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 similar to 120 mu M and the detection limit was calculated as 0.056 mu M (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.

Automated summary

It is crucial to establish sensitive and selective electrochemical sensors for the detection of pollutants in the environment. In this research, CeMoSe2 composite was prepared and used as an electrochemical sensor for the detection of 4-nitrophenol (4-NP). The modified electrode (CeMoSe2/GCE) showed significant progress in catalyzing the oxidation of 4-NP due to the abundant active sites and excellent electron transfer channels of CeMoSe2. The results demonstrated that CeMoSe2/GCE had promising long-term stability and reproducibility for the determination of 4-NP.