化学学报 ›› 1987, Vol. 45 ›› Issue (7): 659-665. 上一篇    下一篇

研究论文

光电化学反应的催化II.表面覆盖针状铱层对n-TiO2电极上光电化学过程的催化作用

吴越;基庆华;查全性   

  1. 武汉大学化学系
  • 发布日期:1987-07-15

The catalysis of photoelectrochemical reactions II. The catalytic behavior of Ir needles deposited on n-TiO2 electrode

WU YUE;DONG QINGHUA;CHA QUANXING   

  • Published:1987-07-15

借助于可换盘旋转环盘电极在含Ce[3+]酸性溶液中比较了n-TiO2电极上载多孔铱层前后的竞争光氧化过程,观察到当铱以高度分散的针状多孔透光层在TiO2电极表面分布时能够催化Ce[3+]的光电化学氧化,并据此讨论了催化光电化学反应的基本前题。

关键词: 光化学反应, 光氧化, 氧化钛, 单晶, 光电化学效应, 铱合金, 电化学反应, 旋转电极, 铯, 圆盘电极

The competitive photooxidn. was studied of Ce3+ on the surface of a n-TiO2 electrode before and after deposition of porous Ir needles by using a rotating ring-disk electrode with interchangeable disk. Highly dispersed porous layer composed of Ir needles could catalyze the photooxidn. of Ce3+. Basic postulates of catalysis of photoelectrochem. reactions are discussed.

Key words: PHOTOCHEMICAL REACTION, PHOTOOXIDATION, TITANIUM OXIDE, SINGLE CRYSTALS, PHOTOELECTROCHEMICAL EFFECT, IRIDIUM ALLOYS, ELECTROCHEMICAL REACTION, ROTATION ELECTRODES, CAESIUM, DISK ELECTRODES

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