Abstract
Sol-gel method was used to synthesize ZnO-MWCNT ionic liquid carbon paste electrode (ZnO/MWCNTs/IL/CPE) taking 1-methyl-3-butylimidazolium bromide as appropriate binder in carbon paste matrix for detection of morphine. X-ray diffraction (XRD), Transmission electron microscopic (TEM), Scanning electron microscopic (SEM) and Energy-Dispersive X-ray spectroscopic (EDS) techniques were used to characterize the nanocomposite. The results obtained by electrochemical oxidation of morphine on ZnO/MWCNTs/IL/CPE shows the detection of morphine in the linear range of 0.1 to 700 μmol L−1 and in the detection limit of 0.06 μmol L−1 (3σ). The simple fabrication method, high sensitivity, stability and low cost of the modified electrode were the main features of the prepared electrochemical sensor.
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