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Updated: Feb 10, 2026

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes
Published on: January 30, 2015
Electrochemical determination of 2,4-dichlorophenol by using a glassy carbon electrode modified with molybdenum
Huayu Huang1,2,3, Mingxia Wang4,5, Yang Wang4,5
1Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Northwest University, Xi'an, 710127, China. huanghy@nwu.edu.cn.
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. Graphical abstract Schematic of an electrochemical sensor for the differential pulse voltammetric (DPV) determination of 2,4-dichlorophenol. It is based on the use of an MoS2-ionic liquid-Au/Ag nanorod composite.
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