Abstract
The influences of the reductant concentration of NaBH4 and the quantity of Pt loading on the active surface area and the sensitivity of the Pt/Nafion electrodes prepared by an impregnation-reduction method in detecting oxygen were investigated in this study. The Pt/Nafion electrodes with a Pt loading of 4.99 mg/cm2, obtained at 0.0107 M Pt(NH3)4Cl2 and 0.06 M NaBH4, show maximum sensitivities of 0.0528 μA/ppm and 0.0538 μA/ppm obtained in O2 concentration regions of 0-5000 and 5000-50 000 ppm, respectively. A sensing model was also proposed to illustrate the sensing phenomenon.
Original language | English |
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Pages (from-to) | 378-385 |
Number of pages | 8 |
Journal | Journal of Solid State Electrochemistry |
Volume | 2 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1998 |
Externally published | Yes |
Keywords
- Impregnation-reduction method Pt/Nafion
- Sensitivity
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering
- General Materials Science
- Electrochemistry