Novel Green and Facile Synthesis of Co3O4 Nanoparticles: Characterization and Its Electrochemical Applications in Simultaneous Determination of Dopamine and Mefenamic Acid

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Hadavand Zahra; Babaei Ali; Ghanbari Davood

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Journal Paper

Paper Information

Journal: JOURNAL OF NANOSTRUCTURES Year:2023 | Volume:13 | Issue:2 Page(s): 512-522

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Title

Novel Green and Facile Synthesis of Co3O4 Nanoparticles: Characterization and Its Electrochemical Applications in Simultaneous Determination of Dopamine and Mefenamic Acid

Author(s)

Hadavand Zahra | Babaei Ali | Ghanbari Davood | Issue Writer Certificate

Keywords

Co3O4 nanoparticles

Dopamine

Graphene Oxide Green

Mefenamic acid

Modified carbon paste electrode

Abstract

In this work, we report the novel green synthesis of Co3O4 nanoparticles (Co3O4NPs) using extract of Elaeagnus angustifolia leaves plant as a mild and non-toxic stabilizing agent. The synthesized Co3O4NPs was characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and FTIR spectroscopy. In order to obtain its applicability, the carbon paste electrode (CPE) modified with the Co3O4NPs and graphene oxide (GO) (Co3O4NPs/GO/CPE) was fabricated as anew sensor for trace determinations of Dopamine (DA) and Mefenamic acid (MFA). The electrochemical investigations on DA and MFA were carried out by application of differential pulse voltammetry (DPV), cyclic voltammetry (CV) and chronoamprometry (CA) methods. The results showed that Co3O4NPs as the modifier in the proposed sensor can accelerates the electron transfer reactions of DA and MFA. Under the optimum conditions, the electrode provides a linear response versus DA and MFA concentrations in the range of 0.5-250 µM and 1-500 µM, with a detection limit of 0.15 µM and 0.3 µM, respectively. The modified electrode exhibited some advantages such as convenient preparation, good stability, high sensitivity and selectivity toward DA and MFA determination.

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