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化学学报
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化学学报 ›› 1987, Vol. 45 ›› Issue (11): 1067-1071. 上一篇    下一篇

研究论文

光电化学反应的催化III: 溶液中钴离子及用钴修饰的n-TiO2电极的光催化行为

吴越;蔡乃才;董庆华;查全性   

  1. 武汉大学化学系
  • 发布日期:1987-11-15

Catalysis of photoelectrochemical reactions III: Photocatalytic behaviors of cobalt ions in solution and n-TiO2 electrode modified with cobalt

WU YUE;CAI NAICAI;DONG QINGHUA;CHA QUANXING   

  • Published:1987-11-15

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被引次数

1

在溶液中加入钴(II)离子能够催化n-TiO2电极上的光电化学析氧反应,增加光电流-电压曲线的充满因子.用钴修饰的n-TiO2电极能提高光电流,并催化溶液中铈(III)的光氧化反应.本文对这两种催化反应的机理进行了讨论.

关键词: 光化学反应, 光氧化, 光催化, 氧化钛, 钴离子, 铈, 反应速度, 旋转电极, 圆盘电极, 化学修饰电极

Different pathways of photocatalytic behaviors of Co on n-TiO2 electrodes were studied. Co ions in solution could improve the filling factor of polarization curves of the electrode under illumination. On the other hand, TiO2 electrode surface modified with Co could result in significant enhancement of photocurrent. Possible mechanisms of the photocatalytic effect of Co were postulated.

Key words: PHOTOCHEMICAL REACTION, PHOTOOXIDATION, PHOTOCATALYSIS, TITANIUM OXIDE, COBALT ION, CERIUM, REACTION RATE, ROTATION ELECTRODES, DISK ELECTRODES, CHEMICAL MODIFIED ELECTRODE

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