Abstract
Molybdenum disulfide (MoS2) was used as an electrically conductive skeleton and functionalized with an ionic liquid and gold/silver nanorods. The resulting composite was characterized by scanning electron microscopy, transmission electron microscopy and UV–vis spectroscopy. The composites were used to modify a glassy carbon electrode (GCE) to obtain a sensor for 2,4-dichlorophenol (2,4-DCP). The results show that the oxidation power and electrocatalytic activity of the modified GCE towards 2,4-DCP are enhanced compared to a bare GCE and other modified GCEs. Response is linear in the 0.01 to 50 μM 2,4-DCP concentration range, with a 2.6 nM detection limit. The sensor is highly sensitive and long-term stable. It was successfully applied to the determination of 2,4-DCP in spiked water samples and gave satisfactory recoveries.
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The authors gratefully acknowledge the financial support provided by the Program for Key Science and Technology Innovation Team in Shaanxi Province (No. 2014KCT-27).
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Huang, H., Wang, M., Wang, Y. et al. Electrochemical determination of 2,4-dichlorophenol by using a glassy carbon electrode modified with molybdenum disulfide, ionic liquid and gold/silver nanorods. Microchim Acta 185, 292 (2018). https://doi.org/10.1007/s00604-018-2834-2
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DOI: https://doi.org/10.1007/s00604-018-2834-2