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Updated: Apr 13, 2026
Fabrication of Carbon Nanotube High-Frequency Nanoelectronic Biosensor for Sensing in High Ionic Strength Solutions
Published on: July 22, 2013
A sensitive electrochemical sensor based on CoWO4/multi-walled carbon nanotubes for the selective determination of
Si Zeng1, Peiyao Zhu1, Deyu Liu1
1Key Laboratory of Testing and Tracing of Rare Earth Products for State Market Regulation, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China. hqt@gmu.edu.cn.
Abstract:
In this work, a novel electrochemical sensor based on cobalt tungstate/multi-walled carbon nanotube (CoWO4/MWCNT) nanocomposites has been used to detect chlorpromazine hydrochloride (CPZ). The CoWO4/MWCNT nanocomposite was obtained by solvothermal technology and ultrasonic method and analyzed using different characterization techniques such as scanning electron microscopy (SEM), X-ray diffractometry (XRD), energy-dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of CoWO4/MWCNT/GCE was explored using cyclic voltammetry (CV). Electrochemical experiments confirm that CoWO4/MWCNT/GCE exhibits excellent electrocatalytic activity towards CPZ with good selectivity, reproducibility and stability. The linear dynamic range of CPZ was observed to be 1-2000 μM with a detection limit of 0.33 μM. Moreover, the actual sample was analyzed using lake water with satisfactory results, portraying the sensor as a potential candidate for the detection of CPZ.
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