Abstract
Pt/Nafion® and Pd/Nafion® electrodes were prepared by impregnation-reduction methods in detecting hydrogen. For improving their anti-aging abilities, polypyrrole (PPy) films were chemically deposited onto the metallized electrodes. After continuously aging tests for 48 h, the sensitivities of the Pt/Nafion® and the PPy-modified Pt/Nafion® electrodes decrease by 68 and 32%, respectively, but the accompanying sacrifice is the loss in sensitivity from 0.0744 to 0.0261 μA/ppm. Similarly, the sensitivities of the Pd/Nafion® and the PPy-modified Pd/Nafion® electrodes decrease by 84 and 68%, respectively, accompanying with the sacrifice of loss in sensitivity from 0.0519 to 0.0262 μA/ppm.
Original language | English |
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Pages (from-to) | 304-308 |
Number of pages | 5 |
Journal | Sensors and Actuators, B: Chemical |
Volume | 87 |
Issue number | 2 |
DOIs | |
Publication status | Published - Dec 10 2002 |
Externally published | Yes |
Keywords
- Aging
- Chemical vapor deposition
- Metallized Nafion® electrodes
- Polypyrrole modification
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry
- Electrical and Electronic Engineering