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Enzymeless electrochemical determination of hydrogen peroxide at a heteropolyanion-based composite film electrode

Abstract

Constructing a specific nanocomposite film with large surface area and excellent electrocatalytic activity are important for its application as an electrochemical sensor. In this work, for the first time, an ultrahigh performance composite film based on a heteropolyanion PW9V3O406- (abbreviated as WV) decorated by Pt@Pd alloy nanoparticles (Pt@Pd NPs) and Prussian blue nanoparticles (PB NPs) was illustrated via layer-by-layer self-assembly approach. The composition, morphologies, and nanostructures characteristics of the [PB/WV-Pt@Pd]6 composite film were completely studied by scanning electron microscopy (SEM), atomic force microscope (AFM), UV-vis spectroscopy, FT-IR spectra and X-ray photoelectron spectroscopy (XPS), respectively. Special irregular morphology of the [PB/WV-Pt@Pd]6 composite film provides a high specific surface area to boost electrochemical activity, the larger roughness and strong electronic cloud facilitate H2O2’s fast reduction at pretty low potential. Under optimum conditions, the [PB/WV-Pt@Pd]6 composite film based sensor presents a broad linear scope of 4.00 × 10-7 M to 2.65 × 10-3 M and a low detection limit of 1.00 × 10-7 M (S/N = 3). Thus, with seemly stability, anti-interference performance and selectivity, the suggested sensor could be conceivably utilized to detect H2O2 in actual samples.

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Supplementary files

Publication details

The article was received on 08 Sep 2018, accepted on 28 Nov 2018 and first published on 04 Dec 2018


Article type: Paper
DOI: 10.1039/C8NJ04570D
Citation: New J. Chem., 2018, Accepted Manuscript
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    Enzymeless electrochemical determination of hydrogen peroxide at a heteropolyanion-based composite film electrode

    D. Zhu, J. Zuo, L. Tan, H. Pang and H. Ma, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04570D

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