Toward membrane-free amperometric gas sensors: A microelectrode array approach
Journal
Analytical Chemistry
Journal Volume
82
Journal Issue
12
Start Page
5238
End Page
5245
ISSN
00032700
Date Issued
2010
Author(s)
Abstract
Room temperature ionic liquids (RTILs) have been applied to a microelectrode array and been demonstrated to form effective, membrane-free amperometric gas sensors. Determining the RTIL [P6,6,6,14][FAP] as the most appropriate choice for extended use, the amperometric quantification of oxygen has been demonstrated. The response of the sensor was quantified by both cyclic voltammetry and chronoamperometry. A range of O2 contents (2-13% v/v) and RTIL layer thicknesses (from ca. 6 to 125 μm) have been investigated. The combination of microelectrode array and RTIL, as well as the absence of membrane and volatile solvent, results in an elegant, easy to calibrate gas sensor with potential utility in standard and nonstandard conditions. © 2010 American Chemical Society.
SDGs
Type
journal article