期刊
INORGANIC CHEMISTRY COMMUNICATIONS
卷 113, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.inoche.2020.107793
关键词
CeO2-CuO nanocomposite; Hydrothermal method; Electrochemical sensor; L-cysteine
Herein, heterostructure CeO2-CuO nanocomposite was prepared via hydrothermal route. The structural, morphological and optical properties of the composite were examined using different characterization techniques such as XRD, SEM, HR-TEM, UV-Vis absorption, FT-IR, AFM and VSM. The electrocatalytic performance of CeO2-CuO modified electrode towards the determination of L-cysteine was investigated using cyclic voltammetry and amperometry techniques. The modified electrode shows wide linear range from 0.01 x 10(-6) to 5 x 10(-3) M with a very low detection limit of 0.01 x 10(-6) M. The proposed electrochemical sensor displayed a sensitivity of 21.6 mu A cm(-2) MM-1 (R-2 = 0.997). The CeO2-CuO modified electrode reveals high stability, good selectivity and appreciable reproducibility. The present work demonstrates a facile electrochemical method for the determination of L-cysteine.
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