| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7148776 | Sensors and Actuators B: Chemical | 2013 | 5 Pages |
Abstract
A potentiometric gas sensor with a planar-type structure was fabricated and used to detect ethanol and toluene at sub-ppm levels. One of the Pt/YSZ electrodes of the (Pt/YSZ)|YSZ|(Pt/YSZ) sensor was coated with MgAl2O4 or Au/YSZ powder separately, and the electrode potential response to ethanol and toluene of these sensors was evaluated. The coating of the Pt/YSZ electrode induced a decrease in the oxide ion activity at the triple phase boundary, and the electrode potential, sensitivity and selectivity for the ethanol and toluene detection were improved. For the MgAl2O4-(Pt/YSZ)|YSZ|(Pt/YSZ) sensor, the electrode potential response to ethanol was higher than that of toluene, while for the (Au/YSZ)-(Pt/YSZ)|YSZ|(Pt/YSZ) sensor, the electrode potential response to toluene was higher than that of ethanol.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Masami Mori, Yoshihiko Sadaoka, Shinichi Nakagawa, Masahito Kida, Takio Kojima,