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Issue 18, 2014
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A three-dimensional interpenetrating electrode of reduced graphene oxide for selective detection of dopamine

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Abstract

Electrochemical detection of dopamine plays an important role in medical diagnosis. In this paper, we report a three-dimensional (3D) interpenetrating graphene electrode fabricated by electrochemical reduction of graphene oxide for selective detection of dopamine. This electrochemically reduced graphene oxide (ErGO) electrode was used directly without further functionalization or blending with other functional materials. This electrode can efficiently lower the oxidation potential of ascorbic acid; thus, it is able to selectively detect dopamine in the presence of ascorbic acid and uric acid. The ErGO-based biosensor exhibited a linear response towards dopamine in the concentration range of 0.1–10 μM with a low detection limit of 0.1 μM. Furthermore, this electrode has good reproducibility and environmental stability, and can be used to analyse real samples.

Graphical abstract: A three-dimensional interpenetrating electrode of reduced graphene oxide for selective detection of dopamine

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Publication details

The article was received on 04 Apr 2014, accepted on 19 Jun 2014 and first published on 20 Jun 2014


Article type: Paper
DOI: 10.1039/C4AN00604F
Author version available: Download Author version (PDF)
Citation: Analyst, 2014,139, 4525-4531
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    A three-dimensional interpenetrating electrode of reduced graphene oxide for selective detection of dopamine

    X. Yu, K. Sheng and G. Shi, Analyst, 2014, 139, 4525
    DOI: 10.1039/C4AN00604F

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