高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (5): 548-550.

• 研究简报 • 上一篇    下一篇

热氧化制备的钯氧化物电极的组成与pH敏感性能

吴宝璋, 吴辉煌   

  1. 厦门大学化学系
  • 收稿日期:1988-08-15 出版日期:1990-05-24 发布日期:1990-05-24
  • 通讯作者: 吴宝璋
  • 基金资助:

    国家自然科学基金

Composition and Sensitivity to pH of Palladium Oxide Electrodes Prepared by Thermal Oxidation

Wu Baozhang, Wu Huihuang   

  1. Department of Chemistry, Xiamen University, Xiamen
  • Received:1988-08-15 Online:1990-05-24 Published:1990-05-24

摘要: 用钯氧化物电极作pH敏感元件已引起人们的兴趣[1~3],但对其性能及其与制备条件的关系仍缺乏了解。本文着重讨论热氧化制备的钯氧化物电极的组成和pH敏感性能同氧化温度的关系。

关键词: 钯氧化物电极, pH传感器, X射线光电子能谱分析

Abstract: Thermal oxidation of Pd in air was studied by thermogravimetric analysis. The composition and properties of the palladium oxide electrodes prepared at different temperatures were characterized by using XPS and electrochemical methods. It is found that the pHresponse of these electrodes depends strongly on the preparation temperature, and Pd( Ⅳ ) oxide is essential to a better pHrespone. The pH-sensing mechanism .was also discussed.

Key words: Palladium oxide electrodes, PH sensor, XPS analysis