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

Chueh Han Wang*, Cheng Hung Wu, Jia Wun Wu, Ming Tsung Lee, Jeng-Kuei Chang, Ming Der Ger, Chia Liang Sun

*Corresponding author for this work

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)576-582
頁數7
期刊Analyst
138
發行號2
DOIs
出版狀態Published - 21 一月 2013

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