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2020-03-09

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cc-by-nc-nd (c) Elsevier B.V., 2020
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/160260

An elegant technology for ultrasensitive impedimetric and voltammetric determination of cholestanol based on a novel molecularly imprinted electrochemical sensor

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https://doi.org/10.1016/j.chemphyslip.2020.104895

Abstract

In this work, a novel molecularly imprinted electrochemical sensor (MIES) has been fabricated based on electropolymerization of a molecularly imprinted polymer (MIP) onto a glassy carbon electrode (GCE) modified with gold-palladium alloy nanoparticles (AuPd NPs)/polydopamine film (PDA)/multiwalled carbon nanotubes-chitosan- ionic liquid (MWCNTs-CS-IL) for voltammetric and impedimetric determination of cholestanol (CHO). Modifications applied to the bare GCE formed an excellent biocompatible composite film which was able to selectively detect CHO molecules. Modifications applied to the bare GCE were characterized by scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (SEM). Under optimal experimental conditions, the sensor was able to detect CHO in the range of 0.1-60 pM and 1-50 pM by EIS and DPV, respectively. Moreover, the sensor showed high sensitivity, selectivity, repeatability, reproducibility, low interference and good stability towards CHO determination. Our records confirmed that the sensor was successfully able to the analysis real samples for determination of CHO.

Subject

Anàlisi electroquímica, Detectors químics, Voltametria

Subject (English)

Electrochemical analysis, Chemical detectors, Voltammetry

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Articles publicats en revistes (Enginyeria Química i Química Analítica)

Citation

JALALVAND, Ali R., et al. An elegant technology for ultrasensitive impedimetric and voltammetric determination of cholestanol based on a novel molecularly imprinted electrochemical sensor. Chemistry and Physics of Lipids. 2020. Vol. 229, num. 104895. ISSN 0009-3084. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/160260

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