高等学校化学学报

高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (11): 1764.

• 论文 • 上一篇    下一篇

铅电极在硫酸溶液中的光电化学行为

翟和生, 尤金跨, 林祖赓   

  1. 厦门大学化学系、固体表面物理化学国家重点实脸室, 厦门, 361005
  • 收稿日期:1995-10-26 出版日期:1996-11-24 发布日期:1996-11-24
  • 通讯作者: 翟和生,男,30岁,博士,助研.
  • 作者简介:翟和生,男,30岁,博士,助研.
  • 基金资助:

    国家自然科学基金

The Photoelectrochemical Behavior of Lead Electrodes in H2SO4 Solution

ZHAI He-Sheng, YOU Jin-Kua, LIN Zu-Geng   

  1. State Key Laboratory for Physical Chemistry of the Solid Surface, Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1995-10-26 Online:1996-11-24 Published:1996-11-24

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摘要： 研究了铅电极在阳极氧化过程中光响应的产生机制。结果表明,Pb电极在光照氧化时存在光活化过程,且光活化过程须在电位高于0V时才能发生。实验中发现铅阳极膜在负电位区除产生阴极光电流外,也能产生阳极光电流,其中阴极光电流是由阳极膜中的p型氧化铅产生的,而阳极光电流则可能由阳极膜中形成p-n结的氧化铅所产生。采用现场测量光电压技术研究了Pb电极在硫酸溶液中的恒电流极化过程。

关键词: 铅电极, 光电化学, 阳极膜

Abstract: The mechanism of photoresponse during the anodic oxidation of Pb electrode was investigated.The results showed that there was photoactivation during the oxidation of Pb electrode under illumination when the electrode potential was over 0 V.The study of the cathodic photoresponse of lead anodic films in the cathodic potential region showed that the lead anodic films could produce cathodic and anodic photocurrents. The cathodic photocurrent was produced by p-type lead oxide in the film, and the anodic photocurrent might be produced by the lead oxide,which formed p-n junctions.The measurement of photo-potential was used to study the constant current polarization of lead electrodes in H2SO4 solution.

Key words: Lead electrode, Photoelectrochemistry, Anodic film

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