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Issue 23, 2017
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A pencil drawn microelectrode on paper and its application in two-electrode electrochemical sensors

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Abstract

A simple approach for fabricating an inexpensive, disposable pencil drawn microelectrode on paper for a two-electrode electrochemical system is developed. The morphology of the fabricated microelectrode was evaluated by optical microscopy and scanning electron microscopy. The electrochemical behaviors of the pencil drawn microelectrode have been investigated by cyclic voltammetry using ferrocyanide/ferricyanide as redox probes. Moreover, Prussian blue was successfully electrochemically deposited onto the pencil drawn microelectrode to detect hydrogen peroxide with a low detection limit of 0.05 μM and a wide linear range from 1.0 μM to 1300 μM (R = 0.997). This cheap and effective microelectrode fabrication method may offer a wide channel for developing lab-on-paper applications through an appropriate combination of graphite pencil traces and paper properties.

Graphical abstract: A pencil drawn microelectrode on paper and its application in two-electrode electrochemical sensors

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Publication details

The article was received on 07 Mar 2017, accepted on 12 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7AY00605E
Citation: Anal. Methods, 2017,9, 3513-3518
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    A pencil drawn microelectrode on paper and its application in two-electrode electrochemical sensors

    E. Y. Jomma, N. Bao and S. Ding, Anal. Methods, 2017, 9, 3513
    DOI: 10.1039/C7AY00605E

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