Development of Nonenzymatic Amperometric Sensor for Detection of Hydrogen Peroxide Based on Manganese(II) Carbonate Thin Films

Stojkovikj, Sasho and Najdoski, Metodija and Sefer, Birhan and Mirceski, Valentin (2014) Development of Nonenzymatic Amperometric Sensor for Detection of Hydrogen Peroxide Based on Manganese(II) Carbonate Thin Films. In: MatCatNet Workshop - From Molecules to Functionalized Materials, 5-10 Sept 2014, Ohrid, Macedonia.

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Abstract

The present study contributes to the development of nonenzymatic amperometric sensors for detection of hydrogen peroxide (H2O2) based on manganese(II) carbonate thin films and has a potential application for glucose detection in biological systems. The thin films are deposited on electroconductive FTO-coated glass substrates using chemical bath deposition method. Thin film chemical composition and structural analysis were studied using XRD and FTIR, and their electrochemical properties and sensitivity towards H2O2 were examined using cyclic voltammetry and amperometry. Thin films with three different thicknesses of 80, 125 and 200 nm were used. The experiments were carried out in a phosphate buffer with c(K2HPO4/KH2PO4) = 0.1 mol/L and pH = 7.5. Wide concentration range of hydrogen peroxide from 5 to 1000 ppm was probed and the most stable electrochemical response was obtained at potential of +0.40 V when using 200 nm thick MnCO3 film. The calibration plot is associated with a linear regression line and coefficient of R2 = 0.99.

Keywords: hydrogen peroxide (H2O2), non-enzymatic amperometric sensors, MnCO3 thin films.

Item Type:	Conference or Workshop Item (Speech)
Subjects:	Natural sciences > Chemical sciences Engineering and Technology > Materials engineering
Divisions:	Faculty of Technology
Depositing User:	Saso Stojkovik
Date Deposited:	05 Mar 2024 11:32
Last Modified:	05 Mar 2024 11:32
URI:	https://eprints.ugd.edu.mk/id/eprint/33809

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