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Journal of Electrochemical Science and Engineering, Vol. 12 No. 1, 2022.

Original scientific paper

https://doi.org/10.5599/jese.1153

A sensitive voltammetric sensor for specific recognition of vitamin C in human plasma based on MAPbI3perovskite nanorods

Gizem Tiris ; Bezmialem Vakif University, Faculty of Pharmacy, Department of Analytical Chemistry, 34093 İstanbul, Turkey
Yasamin Khoshnavaz ; Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
Elif Naz Öven ; Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
Mohammad Mehmandoust ; Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey
Nevin Erk ; Ankara University, Faculty of Pharmacy, Department of Analytical Chemistry, 06560 Ankara, Turkey

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Abstract

A novel and sensitive electrode was suggested for the rapid determination of ascorbic acid (AA) using a glassy carbon electrode (GCE) modified with synthesized MAPbI3and L-cys (L-cys/MAPbI3/GCE). Determination of ascorbic acid as an important component of the human diet due to help in decreasing blood pressure and improving endothelial function is crucial. The synthesized MAPbI3was characterized by different methods, including transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). The fabricated electrode exhibited superior electrical conductivity and fast electron transfer kinetics. The results illustrated that the developed electrode had an outstanding electrocatalytic activity towards the oxidation of AA in0.1 MBritton–Robinson buffer(B-R) as a supporting electrolyte. The modified electrodedemonstrated a linear range in differential pulse voltammetry of 0.02–11.4 μM with a low detection limit of 8.0 nM for ascorbic acid. It can be stated that the proposed sensor can be successfully applied to the determination of ascorbic acid in human plasma samples.

Keywords

Voltammetry; ascorbic acid; MAPbI3; cysteine; human plasma

Hrčak ID:

273200

URI

https://hrcak.srce.hr/273200

Publication date:

24.2.2022.

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