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Fabrication of Surface Renewable Carbon Microelectrode Arrays and Its Application in Heavy Metal Ions Sensing

Abstract

In this paper, surface renewable carbon microelectrode arrays (MEAs) were developed by microfabrication technology and successfully applied into heavy metal ions sensing. The as-prepared carbon microelectrode was fabricated in cylindrical with 50 μm in diameter and 300 μm in height. Cyclic voltammetry (CV) analysis with scan rate ranging from 10 mV/s to 100 mV/s was utilized to characterize the MEAs, and it’s found that typical properties (flat redox peaks) of MEAs appeared at lower scan rate (< 30 mV/s). Heavy metal ions, including Cd2+, Pb2+ and Cu2+ were chosen to demonstrate the performance of the developed MEAs for electrochemical sensor applications, with detection limit calculated to be 1 μg/L. Renewability and repeatability experiments were also carried out to demonstrate the good characteristics of the MEAs. This work developed a novel microfabrication technique for low cost surface renewable MEAs that can be used as electrochemical platform for a wide range of sensor applications.

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Publication details

The article was received on 07 Jan 2019, accepted on 03 Feb 2019 and first published on 05 Feb 2019


Article type: Paper
DOI: 10.1039/C9AY00043G
Citation: Anal. Methods, 2019, Accepted Manuscript

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    Fabrication of Surface Renewable Carbon Microelectrode Arrays and Its Application in Heavy Metal Ions Sensing

    Y. Jin, M. Mao, Y. Ge, S. Huang, J. Ju, Q. Jin, A. Offenhäusser and J. Zhao, Anal. Methods, 2019, Accepted Manuscript , DOI: 10.1039/C9AY00043G

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