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Electrochemical Detection of Nitric Oxide on a SWCNT/RTIL Composite Gel Microelectrode
Chang Ming Li 1,Jianfeng Zang 2,Dong Ping Zhan 1,Wei Chen 1,Sun Changqing 2 * #,Ai. L. Teo 3,Yek. T. Chua 3, Vee. S. Lee 3, Shabbir. M. Moochhala 3
1.School of Chemical and Biomedical Engineering, Nanyang Technological University,
2.Nanyang Technological University
3.Defense Medical & Environmental Research Institute, DSO National Laboratories, Singapore 117510.
*Correspondence author
#Submitted by
Subject:
Funding: none
Opened online:27 April 2006
Accepted by: none
Citation: Chang Ming Li,Jianfeng Zang,Dong Ping Zhan.Electrochemical Detection of Nitric Oxide on a SWCNT/RTIL Composite Gel Microelectrode[OL]. [27 April 2006] http://en.paper.edu.cn/en_releasepaper/content/6429
 
 
Single walled carbon nanotubes (SWCNT) and room temperature ionic liquid (RTIL) were used to make a gel microelectrode for studies of the oxidation of nitric oxide (NO). The Faraday response of the gel microelectrode was contributed from two components: an outside-surface microdisk and a thin-layer cell formed by inner porous electrode materials, and enhanced by the thin-layer effect. An EC mechanism, electrochemical NO oxidation followed by a chemical oxidation, was proposed. The gel microelectrode with a Nafion® coating eliminated interferences from nitrite and some biomolecules, improved stability, and had a linear response range from 100 nM to 100 µM.
Keywords:Nitric oxide; carbon nanotube; sensor
 
 
 

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