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

Research output: Contribution to journalArticle

20 Scopus citations

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.

Original languageEnglish
Pages (from-to)576-582
Number of pages7
JournalAnalyst
Volume138
Issue number2
DOIs
StatePublished - 21 Jan 2013

Fingerprint Dive into the research topics of 'The effects of ionic liquid on the electrochemical sensing performance of graphene- and carbon nanotube-based electrodes'. Together they form a unique fingerprint.

  • Cite this