物理化学学报 >> 1992, Vol. 8 >> Issue (04): 519-522.doi: 10.3866/PKU.WHXB19920418

研究简报 上一篇    下一篇

钯氧化物的电化学与光电子能谱

吴辉煌; 吴宝璋; 周绍民   

  1. 厦门大学化学系,厦门 361005
  • 收稿日期:1991-01-15 修回日期:1991-07-13 发布日期:1992-08-15
  • 通讯作者: 吴辉煌

Electrochemistry and XPS of Palladium Oxides

Wu Hui-Huang; Wu Bao-Zhang; Zhou Shao-Min   

  1. Department of Chemistry, Xiamen Univeristry, Xiamen 361005
  • Received:1991-01-15 Revised:1991-07-13 Published:1992-08-15
  • Contact: Wu Hui-Huang

关键词: 钯氧化物, pH传感器, XPS分析, 阻抗谱

Abstract: Palladium oxide electrodes were prepared by decomposition of Pd(NO_3)_2 or thermal oxidation of Pd, their voltammetric characteristics were found to be dependent on preparation methods. XPS analysis showed that these electrodes had different compo-sitions. The impedance behavour of the electrodes can be presented with a simple eguivalent circuit containing a constant phase-angle element, indicating the microin-homogeneity of the oxide layers. The pH-sensing properties of the electrodes were measured and the pH response mechanism was discussed.

Key words: Palladium oxides, pH sensor, XPS analysis, Impedance spectroscopy