Novel Tetracinnamide Cobalt (II) Phthalocyanine Immobilized on MWCNTs for Amperometic Sensing of Glucose

Document Type

Article

Publication Title

Analytical Chemistry Letters

Abstract

In the present work, a simple and sensitive cyclic voltammetry, differential pulse voltammetry, and chronoamperometry (CA) glucose sensor was developed at multiwalled carbon nanotubes and tetracinnamide cobalt (II) phthalocyanine (MWCNT-CoTCIDPc) modified GCE. The novel synthesized catalyst confirmed with various spectroscopic techniques. The modified CoTCIDPc/GCE using MWCNTs showed a high electrocatalytic activity and lower potential towards the oxidation of glucose (GOx). The response of GOx was linear over the concentration ranging from (CV 2 - 20; DPV 2 - 12; CA 5 - 50 mM/L), sensitivity for (CV 1.905; DPV 3.483; CA 1.035 mA mM-1 cm-2) and detection limit for (CV 0.9; DPV 5.33; CA 6 mM) (S/N=3). The CVs and DPV techniques display shows the same peak potential (+250 mV). The amperometry response time of the sensor was found as 2 s, the fabricated sensor also exhibited its good selectivity in the presence of common interfering biological species for AA, DA, and UA; besides, the fabricated sensor exhibited its special advantages such as low working potential, sensitivity along with good repeatability and reproducibility for the determination of GOx.

First Page

137

Last Page

151

DOI

10.1080/22297928.2020.1760132

Publication Date

1-1-2020

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