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  • Title: The effects of ionic liquid on the electrochemical sensing performance of graphene- and carbon nanotube-based electrodes.
    Author: Wang CH, Wu CH, Wu JW, Lee MT, Chang JK, Ger MD, Sun CL.
    Journal: Analyst; 2013 Jan 21; 138(2):576-82. PubMed ID: 23172364.
    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.
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