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Issue 2, 2013
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The effects of ionic liquid on the electrochemical sensing performance of graphene- and carbon nanotube-based electrodes

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Abstract

The electrochemical sensing properties of graphene-based and carbon nanotube (CNT)-based electrodes towards ascorbic acid, dopamine, uric acid, and glucose are systematically compared. Nano-sized Pd catalyst particles are uniformly dispersed on both carbon supports using a supercritical fluid deposition technique to increase the sensing performance. The CNT/Pd electrode shows higher detection current than that of the graphene/Pd electrode, which is attributed to the three-dimensional architecture interwoven by the CNTs that creates a larger number of reaction sites. With the incorporation of ionic liquid (IL), the detection sensitivity of the IL/graphene/Pd electrode significantly increases, becoming noticeably higher than that of the IL/CNT/Pd counterpart. The synergistic interactions between graphene and IL that lead to the superior sensing performance are demonstrated and discussed.

Graphical abstract: The effects of ionic liquid on the electrochemical sensing performance of graphene- and carbon nanotube-based electrodes

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Publication details

The article was received on 06 Sep 2012, accepted on 24 Oct 2012 and first published on 24 Oct 2012


Article type: Paper
DOI: 10.1039/C2AN36263E
Citation: Analyst, 2013,138, 576-582
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    The effects of ionic liquid on the electrochemical sensing performance of graphene- and carbon nanotube-based electrodes

    C. Wang, C. Wu, J. Wu, M. Lee, J. Chang, M. Ger and C. Sun, Analyst, 2013, 138, 576
    DOI: 10.1039/C2AN36263E

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