CeO2 nanoparticle-modified electrode as a novel electrochemical interface in the quantification of Zn2+ ions at trace level: application to real sample analysis

Abstract

A simple strategy has been proposed to quantify Zn 2+ ions using CeO 2 nanoparticle-modified glassy carbon electrode. The CeO 2 nanoparticles were prepared by sucrose-nitrate decomposition method, and it was characterized by X-ray diffraction (XRD), FT-IR, TEM, and surface area analyzer. The synthesized CeO 2 nanoparticles were used as modifier molecules as a thin film on glassy carbon electrode (GCE) in the trace level quantification of Zn 2+ by using cyclic voltammetry (CV) and differential pulse anodic stripping voltammetry (DPASV) techniques. The fabricated sensor exhibited a good analytical response towards Zn 2+ ions. The modified electrode showed a wide linearity in the concentration range 20-380 μg L −1 with a limit of detection 0.36 μg L −1 . The proposed electrochemical sensor was successfully applied to trace level Zn 2+ quantification from real sample matrices.

Electrochemical sensor based on gum Arabic nanoparticles for rapid and in-situ detection of different heavy metals in real samples

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Measurement of Zinc Ions in Seawater Samples Using a Microfluidic System Based on the GR/CeO2/Nafion Material

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