Nafion-based solid-state gas sensors: Pt/Nation electrodes prepared by an impregnation-reduction method in sensing oxygen

Bing Joe Hwang, Yu Chuan Liu, Wen Cheng Hsu

Research output: Contribution to journalArticle

15 Citations (Scopus)

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 languageEnglish
Pages (from-to)378-385
Number of pages8
JournalJournal of Solid State Electrochemistry
Volume2
Issue number6
Publication statusPublished - 1998
Externally publishedYes

Keywords

  • Impregnation-reduction method Pt/Nafion
  • Sensitivity

ASJC Scopus subject areas

  • Electrochemistry

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