Ultrasonic irradiation effect in the impregnation-reduction process of preparing Pt/Nafion(®) NH4/+ sensor

Hung Sen Twu, Tzong Rong Ling, Tse Chuan Chou, Ming Chang Yang

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5 Citations (Scopus)

Abstract

A systematic study on the ultrasonic irradiation effect in the impregnation-reduction (I-R) process for preparing a Pt/Nafion(®) electrode was carried out in a flow-injection system of ammonium ion detection. Both the impregnation and the reduction stages were affected by ultrasonic irradiation which increased the sensing currents of electrodes. Moreover, the effect of ultrasonic irradiation was found more significant in the reduction process than in the impregnation process. The relationship between sensing current and power of ultrasonic irradiation was also obtained. The specific active surface area of the Pt/Nafion(®) electrodes were evaluated by the cyclic voltametric technique. Meanwhile, the surfaces of the electrodes were characterized by XRD and SEM.

Original languageEnglish
Pages (from-to)41-47
Number of pages7
JournalUltrasonics Sonochemistry
Volume8
Issue number1
DOIs
Publication statusPublished - 2001 Jan

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

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